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What water temperature should be in the aquarium

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The optimal temperature for fish in an aquarium and how to maintain it

Fish are cold-blooded animals, the full activity of which is ensured by the constancy of the water temperature in the habitat. The body temperature of the fish exceeds the water temperature by about 1o. Changing the temperature of the habitat directly affects the health of cold-blooded organisms.

All holders of aquarium fish should understand that the life of their pets directly depends on the temperature conditions in the aquarium. What should be the optimal water temperature for different ornamental fish, and how many degrees should be reflected on the scale of the thermometer so that each fish feels healthy?

About temperature limits for warm and cold-water inhabitants of reservoirs

Tropical and subtropical regions are not characterized by frequent changes in water and air parameters. In Southeast Asia, the temperature range of air is the same throughout the year, sometimes ranges from 3 ° C (26-29 degrees), and the difference in water is almost imperceptible. In South America, hot and humid, throughout the year to air 25-28 degrees.

There are species of fish that prefer wide temperature ranges, and there are those who live only in a narrow range. Only the fry of most fish are resistant to the drop to. When the amount of dissolved oxygen in the water decreases, all fish are less sensitive to temperature changes. Hydrobionts get used to high temperatures in a few days, and to cold temperatures - in almost a month. For normal acclimatization, a gradual increase in to 1-2 degrees, and a decrease in 0.5-1 degrees is necessary.

Watch the video about the aquarium heater.

All fish species have their own upper and lower threshold to. Fish are sensitive to those parameters that go beyond the permissible limits. When the border is violated by several degrees, the health of the fish deteriorates dramatically. Frequent and sudden changes in temperature adversely affect the health of pets. In order to maintain an optimal temperature regime in an aquarium, you need to familiarize yourself with the allowable temperature conditions for warm-water and cold-water fish.

For warm-water fish to water below 18-20 degrees is considered unacceptable. In aquarium fish in this category it is possible to survive in the lower ranges for a long time. But this fish needs a lot of oxygen and space, good aeration is necessary.

For cold-water fish suitable aquarium without heating, 14-25 degrees for them - the maximum. They also need an abundance of dissolved oxygen.

Average temperature range

The fluctuation of aquarium temperatures is possible, it is even permissible within certain limits. A slow change of 2-4 degrees will not lead to tragic consequences. If the aquarium is placed on the window sill or near the window, then depending on the time of year, the temperature will change in it. Aquariums should not be installed near batteries and other heating systems, even heat-loving fish will not survive strong heating.

What can be the water temperature for different fish? You can set the average range of oscillation for cold-water and warm-water fish, but these are not settled in one aquarium - this is prohibited. How many degrees should be acceptable temperature limit, which would be acceptable to all:

  • 24-26 degrees Celsius

See how in the heat to lower the temperature in the aquarium.

Temperature fluctuations should not exceed three degrees! Before settling in the fish aquarium, find out what the average temperature range of their content.

It is also worth controlling to above water - this is important for labyrinth fish that breathe portions of air from the surface. As an example, you can explore the content of the labyrinth fish gourami, which, breathing the air 5o below the water, can suffocate and die. Just for them, the cold air is critical.


It is recommended to install a thermometer and thermostat for water and air to keep the gourams. Water should evaporate in a minimum amount, and to water above water should be similar to that in a pond. If gourami inhale too hot or cold air, the untreated oxygen enters the labyrinth channel, clogs it, and the fish suffocates.

Gourami are temperature sensitive because it affects the breeding cycle. Warm water is an incentive to spawn, in this period it is appropriate. If it is warm all the time, in the body of gourami the processes of vital activity slow down, the protective functions of the body are reduced. At an incorrect temperature, sex cells are not produced, and gourami will not give offspring. Surviving fry in the wrong aquarium water conditions die.

Allowable temperature for gourami in water: 23-26o, to air on the surface - 26-28o.

Is it true that cichlids tolerate different temperature ranges?

For cichlids, the content in warm water is necessary, since such a temperature of water produces the release of enzymes for saturated body color and stimulates them to spawn. Cichlids have high tolerability of both high and low temperatures, but not more than 6 hours. The tank can maintain an average temperature range. At elevated temperatures of cichlids, their color is quickly saturated, but they are depleted and live less.


At lower temperatures, the color of the cichlid tarnishes, the fry grow and develop slowly. The allowable temperature for cichlids is 24-30 degrees. The limit is 24-27 degrees. For Tanganyik cichlids, the water should not be warmer than 29 degrees. In the treatment of certain diseases of cichlids, to increase for some time.

Cichlids are indeed one of the most enduring fish in an aquarium; for a novice aquarist, many members of this family will be excellent pets. However, all types of fish require attentive care, which should not be forgotten.

Water temperature for aquarium fish


Aquarium water temperature

Water temperature for aquarium fish

One of the most important parameters of aquarium water is its temperature. Most aquarium fish feel comfortable at a temperature of 22-26 ° C. But there are fish that prefer a lower or higher temperature.

For example, discus is a heat-loving fish, a comfortable temperature for their maintenance is 28-31 ° C. But the Goldfish family, on the contrary, prefers cooler water at 18-23 ° C.

Thus, speaking of the temperature regime in an aquarium, one should take into account the comfortable temperature parameters for a specific fish. It should also be noted that the temperature of aquarium water directly affects the lifespan of some species of fish. For example, neons at a temperature of 18 ° C live 4 years, at 22 ° C - 3 years, 27 ° C - 1.5 years.

Perhaps the most important rule for an aquarist is to prevent sudden changes in temperature (2-4 degrees). Such vibrations are extremely harmful.
for fish.

Today, there are virtually no problems with maintaining the temperature regime in an aquarium. Therefore, when on the Internet you come across articles about the Soviet methods of “boiling with a kettle” involuntarily you are touched. Only one thing is frustrating - after all, articles on this topic are usually looked for and viewed by novices or young aquarists who are so easily confused with unnecessary, unnecessary information.

The nuances covered in this article for an experienced aquarist will not inspire innovation, but beginners will be noticed.

So, to maintain the required temperature regime of aquarium water, you need to buy two things at the pet shop:

1. Thermostat heater.

2. Thermometer with suction cups.

Regarding the temperature control of the heater for the aquarium - it is chosen based on the volume of the aquarium (its power must be appropriate). They fix it, as a rule, on the back wall of the aquarium, near the filter with aeration, so that it is completely immersed in the input. IMPORTANT: when setting the desired temperature on the scale of the thermostat, the first time (6-12 hours) watch the level of heating of the aquarium water. This is due to the fact that often the scale of the thermostat does not always correspond to the actual temperature of water heating (especially in Chinese thermostats) or the thermostat does not quite fit the volume of the aquarium. Failure to comply with this rule may lead to the fact that in the morning your aquarium may turn "into a saucepan with a good - elite ear."

Well, the second thing to which you should pay attention - the heater for the aquarium should be completely immersed in water. Do not allow it to be in the on state in air (in whole or in part). This will lead to its rapid overheating.

Regarding thermometers for aquarium - everything is simple here! They are:

glass (ordinary) ~ $ 1.2;

in the form of a self-adhesive strip thermometers for the aquarium~ 2$

(I do not recommend. creatively — yes, it is practical — no, especially since this strip “fades” over time);

and electronic thermometers for aquarium 12$;

When buying a thermometer should pay attention to the quality of suckers. If they are weak - the thermometer will often fall to the ground. In addition, there are fish that pathologically may not like the thermometer and they will deliberately drop it (I have suffered from these gays blue).

I think that with the heating of aquarium water everything is clear: - set, adjusted and forgot.

Let's now talk about what to do if the temperature goes over the top (from overheating or "summer in August"). Nowadays, this is also not a problem - the air conditioner will not only cool the room, but also lower the temperature of the water in the aquarium.

Another question is what to do if it is not? Or if you need to urgently lower the temperature? Ice from the refrigerator will come to the rescue. At one time, I poured water into plastic 2-liter bottles (carefully removing the bottle from the label and glue beforehand) and frozen them in the refrigerator. After lowering them into the aquarium and thereby lowered the temperature of the water to the desired.

This method of lowering the temperature has two minuses: firstly, the frozen bottles and ice heat up quite quickly - they often need to be frozen, and secondly: sudden, frequent temperature drops are poorly tolerated by aquarium fish. If the temperature is "tolerable" it is better not to add ice bottles.

REMEMBER: PROVIDING A COMFORTABLE AND CONSTANT TEMPERATURE OF AQUARIUM WATER IS THE KEY TO THE HEALTH OF YOUR AQUARIUM FISH.

Video about the temperature and care of the aquarium

fanfishka.ru

What is the temperature of the water like scalar?

Scalaria (lat. Pterophyllun scalare) is one of the most popular aquarium fish of the Cichlid family. Many species of this fish were removed from South American reservoirs, while others were bred by breeding one or more forms. The common angelfish is perhaps an example of a classic aquarium fish - a disc-shaped body shape, tall and slightly short, with lush sail-like fins. At first glance, it is not so easy to keep such a pet in an aquarium, but this opinion is wrong. They have a peaceful nature, non-aggressive. They can settle different types of fish of the same calm and medium in size: discus, festivals, crayfish, gourami.


It so happens that novice aquarists acquire a scalar without learning the main rules for caring for them. Run into a new aquarium, where the biological balance of the environment has not stabilized. Improper temperature, high acidity, hard water will quickly ruin the health of the angelfish. The presence of nitrates, nitrites, ammonia, and non-evaporated chlorine in water also negatively affects the quality of life of pets. With the fluctuations of such substances the scalars can not cope. This also applies to the parameters of the water in the spawning aquarium, where you have to follow the rules of keeping producers and their brood.

Watch the video story about the content of the scalar.

Therefore, it is important for scalar to maintain a temperature regime. As endemics of tropical freshwater, they are accustomed to warm water. Lowering the temperature of the aquatic environment leads to lethargy, disease, and, as a consequence, death. Hypothermia or too high a temperature is also harmful, as well as a sudden change of water to a new one. To save a full life of a pet, it is worth adjusting the temperature of the water in the aquarium constantly.

Allowable temperature threshold for fish

Angelfish came to us from the warm-water rivers of South America, where heat reigns, so a heating system should be installed in the aquarium. The permissible minimum water temperature is 24 degrees Celsius, the maximum is 30 degrees. Overheating is undesirable, heat accelerates metabolic processes in the body, it quickly wears out and grows old. However, some types of scalar need temperatures above 27 degrees (black scalar), and 30 degrees when spawning. Increased to spawning speed up the process of ripening eggs.


The optimum temperature in the aquarium will provide sufficient space. The tighter the tank, the faster it heats up the water. The more fish live in it, the less free space to find a cooler corner. The flow of water should be average, many plants will provide them comfort.

The tank should be in a quiet, lighted place, so that no loud sounds or sudden movements in the room would come to it. Stress leads to a loss of bright color. Place with direct sunlight is not suitable. Lighting LB lamps provide the desired light and temperature.


Sudden fluctuations in water temperature should not occur. Short-term lowering of the fish will survive, but such a risk can lead to hypothermia. When replacing water, it is necessary to ensure that the level to be maintained so that the new water matches the old one.

Conclusions: in the general aquarium, the optimal temperature threshold for scalars is 24-30 degrees Celsius. Water should not get very hot and cool. Make every effort to prevent sudden changes in all parameters of the environment.

See how to quickly calibrate aquarium thermometer.

Temperature in the spawning aquarium for scalar

Angelfish begin to multiply with a gradual increase in water temperature in spawning. Temperature from 27 to 28 degrees - optimal for breeding almost all types of scalar. With her, the eggs will ripen faster, and the fry in such water will develop comfortably. Within a few weeks, the male and female will get used to the new parameters that will encourage spawning. After 2 weeks they will produce eggs on the surface of a stone or a plant. A few more days, the roe will ripen, then the fry will hatch. Unfortunately, at low temperature, the roe slowly ripens, or the larvae of the fry never appear. To avoid this, make measurements to water with a special thermometer. Having raised the temperature a little, some fry of an angelfish will be born.

Water temperature in a fish tank - Frequently asked questions by aquarists

Have you ever thought about why different fish need different temperatures? And how does the discrepancy affect them? And how sensitive are they to drops? Rapid changes in temperature aquarium fish suffer poorly, this is one of the reasons from which newly acquired fish die. In order for fish to get used, they need to be acclimatized.

Simply put, the higher the temperature of the water, the faster the fish grow, but they also age faster. We collected a few frequent questions about the temperature for aquarium fish and tried to answer them in an accessible form.

Fish cold blooded?

Yes, their body temperature is directly dependent on the ambient temperature. Only a few fish, for example, some catfish, can change body temperature, and even sharks maintain body temperature a few degrees higher than water temperature.

Does this mean that the temperature of the water directly affects the fish?

Water temperature affects the speed of physiological processes in the body of fish. For example, in winter, the fish of our water bodies is inactive, since the level of metabolism drops significantly in cold water.

At high temperatures, water retains less dissolved oxygen, and for fish it is very important. That is why in the summer we often see fish rise to the surface and breathe heavily.

Rapid changes in temperature aquarium fish suffer poorly, this is one of the reasons from which newly acquired fish die. In order for fish to get used, they need to be acclimatized.
Simply put, the higher the temperature of the water, the faster the fish grow, but they also age faster.

How sensitive are fish to temperature extremes?

Fish feel the slightest change in water temperature, some even such as 0.03C. Aquarium fish are usually all tropical species, and, therefore, are accustomed to live in warm water with a constant temperature. With a dramatic change, if they do not die, they will survive significant stress and become infected with an infectious disease, due to a weakened immunity.

Fish that live in a climate like ours are much more stable. All carp, for example, tolerate different temperatures well. What can I say, even the well-known goldfish, can live both at a temperature of 5C and at more than 30C, although such temperatures are critical for them.

Are there fish that carry extreme water?

Yes, several species can temporarily live in hot water. For example, some Killifish species that live in Death Valley can carry up to 45 C, and some tilapias swim in hot keys with a temperature of around 70 C.But they all can not live long in such water, the protein in their blood just begins to collapse.

But the fish are able to live in ice water, more. At both poles there are fish that produce a kind of antifreeze in their blood, allowing them to live in water with a temperature below zero.

What if summer is very hot?

As already mentioned, warm water retains less oxygen, and the fish begin to experience oxygen starvation. They begin to choke, and the first thing to do is turn on a powerful aeration or filtration to increase the movement of water and metabolic processes in it. Next, you need to put in the aquarium a bottle of cold water (or ice, if you were preparing for this situation), or replace some of the water with fresh water with a lower temperature.

Well, the simplest and most expensive solution - air conditioning in the room. And in more detail about all this read in the material - hot summer, lower the temperature.
And the simplest and most inexpensive is to install 1-2 coolers so that they direct the air flow to the surface of the water. This is a proven cheap way to cool the temperature in an aquarium by 2-5 degrees.

And what tropical fish can you keep in cold water?

Although some tropical fish, such as corridors or cardinals, even prefer cool water, for most it is too stressful.

The analogy is simple, we can also live quite long on the street and sleep outdoors, but in the end everything will end sadly for us, we at least get sick.

Do I need to change the water in the aquarium with water of the same temperature?

Yes, it is desirable that she was as close as possible. But at the same time, in many species of tropical fish, the addition of fresh water with a lower temperature is associated with the rainy season and the beginning of spawning. If you breed fish in your tasks is not included, it is better not to risk and equalize the parameters.

For sea fish, it is definitely necessary to equalize the temperature of the water, since sea water does not have sharp changes.

How long do you need to acclimatize new fish?

You can read more about acclimatization by clicking on the link. But, in short, the fish actually needs a lot of time to get used to the new conditions. Only water temperature is critical when landing in a new aquarium, and it is desirable to equalize it as much as possible.

The temperature in the aquarium for fish

The life of all living organisms, including humans, is determined by a number of environmental factors. Among physical factors, temperature plays the greatest role, affecting the flow of all metabolic processes within an object. That is why the observance of the correct temperature regime will provide your pet with comfort and long life.

The optimum temperature in an aquarium can vary within very wide limits for different organisms of even one family, therefore we cannot separate each one individually. But to discuss the temperature optimum for the most common inhabitants of aquariums, we are quite capable.

Temperature in a guppy aquarium

Guppies are not demanding fish and can easily live in a regular can, but for nurturing beautiful and healthy pets it is necessary to provide them with space and regular aeration of water. Regarding temperature, guppies are also labile, the range from 18 to 30 degrees is suitable for vital activity, but the optimum is 24-25 degrees.

The temperature of the water in the aquarium for the angelfish

Angelfish are warm-water fish, so the fact that for guppies is considered an extreme temperature for existence, for scalar still quite a pleasant atmosphere. Anyway, these cold-blooded fish are most active at 28 degrees, while at 24-25 their growth and development begins to slow.

Temperature in a cichlid aquarium

Cichlids are very sensitive to temperature fluctuations. As a result of hypothermia or overheating, they not only stop the development, but also lose the opportunity to develop their remarkable color, which is why the temperature in the aquarium for such fish should be a constantly adjustable parameter. The optimum is 25-27 degrees, but for Tanganyik cichlids, this temperature should not exceed 26.

The temperature in the aquarium for barbs

Barbus - fish is simple to keep. Barbs are easy to feed, breed and maintain conditions optimal for their existence. The optimum can be considered the temperature in the range from 21 to 26 degrees, while it is desirable that the water is well aerated and there was a slight flow.

Temperature in a catfish aquarium

More than 1000 species of fish from different families are called somami, therefore it is not easy to determine a single temperature range. Usually, catfish love temperatures closer to room temperature. in the range of 22-25 degrees. For stimulation of reproduction, the temperature is usually increased by 2-3 degrees.

Water temperature for red-eared turtles. Plovers at home

Many dream to have a red-eared turtle, which is derived from the American freshwater species. However, before you do this, you must carefully review the basic requirements that must be met in order for the pet to feel well at home. The most important thing is the optimum water temperature for red-eared turtles, proper care and maintenance. Now we will tell you in detail about how to create the necessary living conditions for a new pet.

Content at home

When buying a turtle, be prepared for the fact that you will need to care for it for 30-40 years, because so much on average these pets live in captivity. The first thing you should take care of is the aquarium equipment. Its volume should not be less than 100 liters for one turtle, if there are more, then the capacity should increase in direct proportion. It is necessary to acquire individuals of different sex, but of the same age. With all this it is necessary to take into account that they need both water and land, since it is there that they like to bask in the sun. So do not forget to arrange your pets a small island of paradise. By the way, the ascent to the land should start from the very bottom of the aquarium. For proper development you will need an ordinary incandescent lamp and ultraviolet. The second is necessary so that the tortoise does not hurt and develop properly. At first glance it may seem that the eared turtle at home can give you a lot of difficulties, but this is not quite so, you will soon get used to everything.

Proper nutrition

If the ration of a fresh-eared red-eyed bug is well thought out, then the pet will grow up healthy and will not get sick. Much depends on the age of the animal. If the turtle is young, it feeds mainly on animal feed, worms, bloodworms, etc., come on. But we must not forget that the older the animal, the more it favors vegetation. As for the frequency of feeding, it is first necessary to give food every day, and so for several years. After you can feed a little less, for example, 2-4 times a week. You need to buy special food, preferably dry or frozen. Purchase it in specialized stores and always pay attention to the shelf life. But it is recommended to prepare the food mixture yourself. As a basis, you need to take gelatin and add different ingredients there (cabbage, apple, fish fillet, raw egg, etc.). If the nutrition is correct, then the red-eared turtle at home will grow big and healthy.

Optimum water temperature for eared turtles

How warm or cold water in an aquarium should be monitored very carefully. This is due to many reasons. At a low temperature, the animal will stop eating, therefore, the immunity will fall, the turtle will become lethargic, and if it continues like this, it can completely die. If the temperature is too high, nothing good will come either. In this case, the animal will spend most of the time on land, as it will feel uncomfortable in the water. This is fraught with the fact that growth and activity will slow down significantly. In order to avoid all this, you need to maintain a temperature in the range of 22-28 degrees Celsius. Perhaps a slight deviation of up to 30 degrees, but no more. To do this, you must use an aquarium heater with adjustable temperature. This is one of the most important content requirements. Do not forget that only the optimum water temperature for red-eared turtles will make the animal healthy and cheerful.

A little more about the temperature and purity of water

Do not forget to ensure that no harmful organic compounds are formed in the water. They appear due to pollution. For this simple reason, it is necessary to periodically change 30-40% of the water in the aquarium. It is desirable to do this at least once a week, but it can be two. Although it is not necessary to increase this procedure, because every time the turtle suffers stress. It is safe to say that these animals are not the most ambitious, so their environment will quickly become polluted. To slow down the process a little, install a filter, for example, one that is used when keeping aquarium fish. Since the water temperature for red-eared turtles should always be constant, then when you add a certain part (30-40%), make sure that it is the same as the one in the aquarium. This is done so that the animal does not experience hypothermia or, conversely, excessive temperature.

How to choose a suitable aquaterrarium

Often, along with the turtle in the aquarium live fish, snails, etc. Therefore, the standard 100 liters will not be enough for us. To resolve this issue, you need to increase the space. It is not necessary to do this in proportion, especially if there is one bug, and the rest of the inhabitants are small fish. Although it is not recommended to keep fish and turtles together, as the latter are predators and can easily eat their neighbors. Do not forget that the thickness of the water layer should not be less than 40 centimeters. This is done to ensure that the shell is completely covered. Best suited capacity with a wide bottom. Do not forget that your little turtle can escape. To avoid this, you need to close the aquarium with glass or a special lid with light.

How to equip the home of turtles?

After we have dealt with the temperature of the water and the size of the aquarium, everything must be correctly arranged there. Make it not as difficult as it may seem at first glance. First, create land. This can be done in several ways, for example, to pour a small handful of special stones. It is desirable that the sharp edges were absent, so the animal can not get hurt. Another solution is to install the glass at a 45 degree angle and glue it with a non-toxic sealant. Pour stones on the glass, and so that they do not roll down, make a special rim. You also need to decide whether there will be live plants in the aquarium. In principle, everything that the animal seems edible will be immediately consumed in the daily ration, the turtle will simply tear up everything else. In part, the issue is solved by buying ornamental plants or snags, which are securely attached to the bottom. If you do it right, then keeping red-eared turtles will not be a problem for you.

Pontoon: how to care and what to follow?

We have already reviewed most of the information that, in one way or another, concerns the care of this animal. But I would like to touch on a few more important points. First, soberly assess your capabilities. If you are not able to give at least 10-20 minutes a day to your pet, then it is possible that you do not need to start it. But if you do decide, install a thermometer on the aquarium, which will show how hot the water is. Of course, for this there is a regulator on the heater, but one should not completely rely on electronics. What else is extremely important, try to periodically compare photos of red-eared turtles, which are considered healthy, with your pet. It will tell you a lot. Sometimes the shell begins to harden and grow over. Many grab a stiff brush and begin to rub the bug to shine, which is absolutely impossible to do. This will cause damage to the surface, as a result of which the animal may lose its natural protection.

What to do when breeding turtles?

Despite the fact that at home these animals are rather rarely bred, anything can happen, and you need to be ready for this. Firstly, there should be a small layer of soil at the bottom, since the female buries her offspring there. It is necessary to slightly raise the minimum temperature threshold. Water should be heated to 25 degrees Celsius - only in such conditions masonry will mature. You can use sand as a primer or mix it with something else. After the clutch appears, hurry to move it to another place, as it is likely that the eggs will be damaged by adults. In a separate aquarium it is necessary to maintain the temperature of the soil at least 21 degrees. Please note that the red-eared turtle, especially small, requires good nutrition. So you can significantly accelerate its development.

Conclusion

So we talked about who the red-eared turtle is, how to care for a pet and what conditions need to be arranged. If everything is done correctly, the animal will not be sick. For example, the content of red-eared turtles at low water temperatures is fraught with pneumonia. It is necessary to raise the degree to 28 or even 30 ° C. If the eyelids and eyes are puffy and turn red, then the individual must be quickly transplanted into a separate aquarium. It would be preferable to be on land, in the water can be allowed only for a few hours a day. Again, if you are a newbie, periodically look at photos of red-eared turtles kept in optimal conditions and compare them with your pets. So you can determine if everything is in order. But even with proper care, the shell of an animal can become soft, as a result of which it will begin to peel off. In this case, it is recommended to give more varied food. You should also be aware that the bug should not be allowed to walk on the floor, as it can get sick from a draft.

Well, that's all that can be said about such a pet as a red-eared turtle. Care, water temperature, its purity and other factors directly affect its health, so you need to carefully approach the content of such an unusual pet.

I have an aquarium how many degrees usually it should be water?

Pirawth

Most aquarium fish will suit 22-26 ° C. Perhaps only discus and some labyrinth fish prefer water warmer: 28-31 ° C. Goldfish need water more cool. When the aquarium content of the temperature range of 18-23 ° C, they are quite satisfied. For quite a long time (a year or more) they can live at 25-27 ° C, but eventually they get sick - as a rule, they develop dysfunction of the swim bladder.
It is important to avoid significant (more than 2-4 degrees) temperature fluctuations. Its smooth changes are quite permissible, but sharp jumps during a day, or even several hours, are extremely undesirable. Meanwhile, this happens not so rarely, especially with small aquariums with a capacity of less than 60-50 liters. Relatively small volumes of water cool quickly and heat up quickly. For a long time, the open window in the cold season can easily draw a room. If there is no heater in the aquarium, then in a few hours of such aeration, the water in it will noticeably cool down. It turns out the fish, too, can catch a cold. And then "pick up" a bacterial infection or chylodonellosis. If there is no thermometer in the aquarium, such temperature fluctuations may go unnoticed by the owner of the aquarium. It should be noted that a small aquarium is immeasurably smaller than even a small natural reservoir, where water temperature changes proceed much more slowly (large masses of water slower and cool down and heat up more slowly). That is why fish are completely unsuited for sudden temperature jumps and these jumps can cause them great stress.
Sometimes it is necessary to carefully monitor not only the temperature of the water, but also the temperature of the air above the water. This is especially important when keeping maze fish that regularly capture air from the surface. Sufficiently heat-loving Siamese fighting fish (cockerels) and lyalius can get sick or even die “breathing” the air, which is 5 degrees and colder than the water where these fish live. When the content of labyrinth fish some caution when airing the room is especially necessary.
Overheating can also be very dangerous. Worst of all, it is carried by well-fed fish. Warm water contains much less oxygen, and well-fed fish especially need it. Overheating can occur from solar heating (if the aquarium is so located that direct sunlight falls on it), from the heat of the radiators (if the aquarium is located close to them, it is 50 cm or less), powerful, and the aquarium is covered with a deaf lid. Not without reason, plant lovers, illuminating their aquariums with powerful lamps, make additional ventilation holes in the aquarium covers and fit computer coolers for them. Using the cooler, you can reduce the temperature of the surface layers of water by 1-3 degrees.
From the foregoing we can draw the following conclusions:
A thermometer is an absolutely necessary measuring instrument for an aquarist.It should be placed in the aquarium so that it is noticeable even with a glance casually thrown at the indoor pond. The aquarist should know about the failure of the temperature regime in the aquarium as soon as possible and take action immediately. Thermometers in the glass case alcohol and especially mercury are quite accurate. But they are immersed directly in the water of the aquarium and either are attached to its wall with the help of a sucker (which does not always look beautiful), or they set sail for free swimming. The latter option leads to significant inconvenience. A thermometer, if it does not float somewhere in an unknown direction, it will certainly turn in such a way that the scale will not be visible. Liquid crystal thermometers are much more convenient. They look like a small strip attached to the glass of the aquarium from the outside. They measure temperature less accurately, but for amateur purposes, they are excellent and their readings are always in sight.

The optimal water temperature for goldfish in an aquarium

مخلوق غريب

They contain goldfish in a wide, low and spacious aquarium with gravel or pebble soil. Acidity does not matter much (in general, goldfish are not capricious), and cruelty is not lower than 8 °. If the fish are sluggish, immobile, you can add salt at the rate of 5-7 g / l. The oxygen content should be high; air blowing and frequent water changes are recommended. Long-bodied fish need more water than short-bodied. Goldfish are quite peaceful, they can be kept together with other species, but voile tails are better separately, since other fish can damage their outfit. In fish tanks with bulging eyes, growths, there should not be stones and objects with sharp edges that can injure them. Water temperature from 15 to 24 ° C. In summer, you can gradually increase the temperature (up to 30 °).

Strunina Katya

The fish is suitable for keeping in a cold-water aquarium with a large space for free swimming. Beautiful in the greenhouses. Due to the endurance of the breed, it can be kept in a decorative pond outside. Prefers a community of their own kind, bright light and an abundance of free space.
Temperature and oxygen regime
Goldfish are considered to be cold-water, as they easily tolerate a decrease in temperature, but they are most playful at a temperature of 22-24 degrees. Sharp temperature fluctuations are unacceptable! For ordinary goldfish, the water temperature in the aquarium can vary from 8 to 30 degrees, the optimum is 15–20 degrees, ornamental rocks are much heat-loving; The chemical composition of the water is not important. Goldfish (long-bodied, contained in pools and ponds) tolerate a decrease in temperature to 0 degrees Celsius and can winter under ice. It should be borne in mind that with a prolonged decrease in temperature, the fish may become more susceptible to various diseases, and warming of water leads to a decrease in the content of oxygen dissolved in it, from which cold-water fish suffer greatly, start to eat little and become exhausted. In hot weather, daily water changes prevent overheating of the aquarium.
For goldfish, aeration of water is obligatory, in which water is enriched with oxygen both from the surface of air bubbles formed by the nebulizer and from the surface of water. As a result of the circulation of water caused by the flow of bubbles, the oxygen-rich upper layers are mixed with depleted lower layers. In addition, the circulation is also useful in that it mixes relatively warm upper layers with cooler bottom layers, thus creating uniform temperature conditions inside the aquarium. If your fish are constantly at the surface of the water and swallow air, then this is the first sign of oxygen deficiency. It is necessary, or to change the water / part of the water, or to strengthen the aeration, or to plant fish.
The presence of a filter in aquariums with goldfish is also a necessary condition, as mobile and voracious fish, taking food from the ground and constantly rummaging in it, pollute the water. The power of the aeration compressor and / or filter (measured by the amount of distilled water in liters over a certain period of time) is selected depending on the size (volume) of the aquarium. The average is the power at which an compressor can pump over the entire volume of water in an aquarium in an hour. After several months of running an aquarium, you will be able to accurately set the power required in your case. If one type of filter is insufficient, you can use a combination of filters, a large selection of which is presented on the market of equipment for aquariums.
Goldfish are not very demanding on the chemical composition and hardness of the water, but before you fill the new aquarium with tap water, open a good tap and let the water flow for 5-10 minutes. This is done in order to reduce the content of heavy metals in it during stagnation in the pipes. It is necessary to fill the aquarium after planting, and so that the laid soil does not stir up. It is advisable to use a hose with a tip bent towards the top or an ordinary wide plate placed on the bottom. Filling the aquarium should not be to the brim, but leaving about 5 cm above.

What water temperature should guppy fish have?

IRIShK @

In general, a guppy fish is not whimsical, with us it even lived at room temperature without a heater and even multiplied !! !
Aquarium needs a square, (round is garbage, even though it looks beautiful) - it costs from 1000 rubles
Next, you need air (I do not know how to properly name it) - it is from 300 rubles
and you can still buy a heater - from 300 rubles.
Look algae on Avito)

Alex

The temperature of the guppy content depends on what you want to achieve. So that the fish would develop rapidly, multiply rapidly, be small and bright, but did not live long, then + 26 ° C, even +28. If you want to live long, grow to the maximum size, but develop slowly, then from +18 to +24. Carry cooling and even lower. The heater therefore can not be set. Room temperature fits in every conceivable range. Soil recommend gravel 3-5 or 5-8 mm, you can and pebbles, you can, and generally without soil, as such. Water - hard to saturation, even brackish up to 5-7. The aquarium can be the simplest of 10 liters. In St. Petersburg from 250 rubles. You, most importantly, start, then you will understand. Remember, aquaria is a contagious chronic disease! You can then not get rid of all my life! Of course, it is better to have an aquarium of 80-100 liters, a good filter, a time relay for a fluorescent lamp illuminator ... The main thing is to start! Such an aquarium with the equipment of a good company - thousands of 10.

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