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How to change the water in the aquarium

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How and when to change the water in the aquarium

Water for aquarium fish should be maintained in a constant composition, which will regulate the amount of organic impurities in it. Biological equilibrium can be achieved through filtration and regular water renewal. Proper renewal of water in an aquarium with fish is the key to their health and good life, because this procedure preserves the mini-ecosystem of the home nursery.

Types of replacement in an artificial reservoir

Replacing water in an aquarium is an indispensable component of its content. There are 2 types of water changes - partial change and full change.

  1. Partial replacement in a freshwater aquarium maintains the biological balance of the aquatic environment, despite the often changing composition of the fluid. Before changing the water, from the moment of its first launch, you need to wait two months. Correctly update the water 1-2 times a week, no more than 20-30% of the total. It is often dangerous to change water - it usually leads to deterioration of water quality and neutralization of beneficial microflora.

See how to make a partial replacement of water in the aquarium.

  1. Complete replacement of water is needed as a last resort - when all the aquarium fish are sick. One fish can be quarantined, in the case of disease of all residents of the nursery you want to change all the liquid. There are a number of drugs that help cure ailment, but they contain chemicals that pollute water, after which it will be unsuitable for life. In this case, a complete replacement of water is often a necessary measure, since even drugs cannot completely destroy the pathogenic microbes. Change all the water you need with a special device - aquarium hose, which is on the shelves of pet stores. When completely replacing the hose with a hose, siphon the bottom, cleaning it from contamination, and the glass container is washed with a special liquid to remove plaque. If you need to fight the disease - you will have to bring all the details back to normal, all the water updates are not enough.
  • Attention!

A complete water change is required during a scheduled restart.

Aquarium water: how to defend?

How many checks are needed to normalize the water in the aquarium? It rarely happens that tap water does not contain chlorine and phosphate compounds, and if so, then this is a lot of luck. You can purchase litmus paper at the pet store, using it to measure the acidity and hardness of water from the tap. Water in a small aquarium is easier to put in order than in a large one. Special components that increase or decrease water hardness can be found in stores or in your own home. In aquariums with a volume of more than 150 liters, you can replace 20% of the water yourself, without prior preparation.

How much time to defend the water? Everything depends on the type of fish that will settle in the reservoir, on their requirements, on the whimsical nature of aquatic plants - after all, the fish often live with plants, and they are almost indispensable. If it does not meet the pH level of 7.0, then it can be defended for 3-4 days until the chlorine and phosphate compounds evaporate.

Aquarium water: what you need to know about the big replacement?

A large water change is the renewal of a significant amount of fluid that occurs in stages over a period of 5-7 days. It is necessary to change such water when there is a need to lower the level of compounds accumulated in the water. Often after a big replacement, the fish become healthy and active. However, changing the contents of the reservoir is not recommended very often.


In a 100-liter aquarium with a small amount of vegetation, you can make the following replacement:

Drain 80 liters of old and add 40 liters of new water, add another 40 liters in a day. But this option is unacceptable for reservoirs where there is a lot of vegetation and fish. In this case, it is better to update 60% of the volume once.

Recommendations for replacing in saltwater aquariums

Sometimes you need to change the water in an aquarium with sea water, if it is in the house. Replacement should occur at elevated concentrations of nitrates and nitrites. Updating a saltwater aquarium does not go as it does in a freshwater aquarium. Properly used with distilled salt water or distilled through reverse osmosis liquid.

Whimsical hydrobionts and sea fish will not be able to live in tap water. Without prior, multi-phase filtering, it only hurts sentient beings. Replacing water 1 time per month (10-20%) of the total volume of the reservoir is not particularly effective with heavy pollution. In saltwater aquariums, it is better to replace a large amount of water.

See how to run a saltwater aquarium.

How to know that it is time to update the aquatic environment in a salt water tank?

How much time must pass to have to renew the aquatic environment in the marine tank again? The first is to check periodically observations and tests using reagents. The pure water dissolves salts that contain: MgSO4x7H20, sodium chloride, potassium bromide, MgCl2x6H2O, SrCl2x7H20, sodium carbonate, calcium chloride, potassium chloride, boric acid, sodium hydrosulfite (acid salt), sodium fluoride. These components are part of the artificial sea salt, which must be added over 3 days gradually, one after the other. But this option is very difficult for beginners. In order not to harm the fish and plants, there is a second way - to monitor the quality of the tank (whether there are greens in the water, foam, haze, droppings), its purity and smell.

Also make sure that the quality of the filter has not changed (both mechanical and biological). High-quality filtration prevents severe contamination, so there will be no need to completely change the fluid in the pond. A good filter restores the biological balance of the nursery, making it suitable for further use.

Replacing aquarium water

Water for aquarium fish must be supported by a certain composition, in which the proportion of substances from the decay of organic matter is regulated. Despite the fact that in many respects equilibrium is achieved through the use of filtration, it is necessary to carry out regular replacement of water. Deciding how to change the water in the aquarium, its owner must represent what kind of results he wants to achieve.

How to change the water in the aquarium

Replacing the water in the aquarium is an obligatory process for its maintenance. There are partial substitution and complete replacement of water.

Partial water change

Partial substitution in a freshwater aquarium is necessary to maintain the balance of the formed environment due to the fact that it evaporates and changes its composition. However, before changing the water in the aquarium, time should pass from the day of its launch: at least 2 months.

The frequency of partial replacement procedures is once every 1-2 weeks. Replace recommended 1/5 of the total.

Beginner aquarists face the question: how much to defend the water for the aquarium? If tap water does not contain chlorine and phosphates, then it can and not be defended. To check the presence of harmful substances should be tests. If these compounds are in tap water, then you can defend it for day 3. Also, the preparation of water for the aquarium can be carried out using special compositions to change the chemical composition of the water. With a sufficiently large volume of the aquarium (more than 150 liters) without special preparation, you can replace up to 20% of water in it.

Deciding what kind of water is needed for an aquarium when carrying out a partial substitution, should be guided by the capriciousness of the species of fish and plants that inhabit it.

Big substitution of water in several stages

The big substitution is the replacement of a significant amount of water in several stages during the week. Such a replacement of water in aquariums is used when you need to repeatedly reduce the level of substances accumulated in the water. After such a procedure, the fish become more active. But it should not be made too often.

How to change the water in the aquarium gradually, but in large volumes?

Consider the example of an aquarium in 100 liters. If there is little vegetation in it, such a change of water in the aquarium can be done as follows: drain 80 liters and add 40 liters of new water, and then after the remaining 40 liters.

For aquariums densely populated with fish or planted with algae, this option super-substitution is not acceptable: you can replace up to 60% of the total at one time.

It is convenient to use super substitution, which takes place in several stages. 60% of the volume of water in the aquarium is drained and only 30% is added, then half of the remaining is discharged and the same volume is added. The last manipulation is repeated 2 times, then add another 30% to the full volume of the aquarium. All stages of this super substitution take place in one week. At the same time, the concentration of harmful substances in water decreases to 8% of its initial volume.

Full replacement of water in the aquarium

Complete replacement of all water in established aquarium systems is extremely rare and in exceptional cases. It adversely affects its inhabitants: the leaves of plants grow brighter and die off more quickly, and some fish may die.

What water is needed for aquariums when it is completely replaced? Water should be prepared in advance, otherwise all the benefits of such a replacement will be leveled by a sharp change in pH-environment and water temperature, which, in turn, will be stress for fish. Therefore, for effective replacement of water it is often necessary to change its chemical composition.

How to change the water in aquariums with sea water

The main question for novice marine aquarists is how to change the water in an aquarium with sea water, without disturbing its composition. The main reason for its replacement: an increase in the concentration of nitrites and nitrates in water.

Replacing water in an aquarium with a marine bio-system is different from a freshwater aquarium. Firstly, if there are whimsical hydrobionts in the aquarium, it is recommended to take water either distilled or passed through reverse osmosis. There are aquarists who successfully use tap water to replace small amounts of water in fish aquariums. However, beginners should be aware that such a replacement is far from being possible for all types of marine fish and the water must be pre-filtered.

There are many discussions among non-professional owners of saltwater aquariums on how to change the water in aquariums with sea water. It is believed that the monthly substitution, which occurs in 5-20% of the water in the aquarium, does not give the desired effect if the aquarium is heavily polluted. But replacing large amounts of water destabilizes the balance. Therefore, the frequency of this process and the volume of water being replaced are determined by the efficiency of a particular aquarium. The need for an emergency replacement will be recognized by conducting regular water testing using tests.

The process of preparing water for the aquarium is simple. The purified water dissolves salts, which include: MgSO4x7H20, NaCI, KBr, MgCl2x6H2O, SrCl2x7H20, Na2CO3, CaCI2, KCI, H3BO3, NaHCO3, NaF. It lasts 3 days and it is better to add salts in a certain sequence.

Full replacement of water in the marine aquarium is carried out only as part of its restart.

Learning to do the replacement of water in the aquarium

An aquarium decorates every home, but is also often the pride of the inhabitants of the room. It is known that the aquarium has a positive effect on the mood and psychological state of a person. So, if you look at the fish swimming in it, there comes peace, calm and all the problems are relegated to the background. But here we should not forget that the aquarium requires and care. But how to care for the aquarium? How to clean the aquarium and replace the water in it so that neither the fish nor the vegetation will suffer? How many times do I need to change the fluid in it? Probably worth talking about this in more detail.

Tools for replacing aquarium water

Novice aquarists suggest that replacing water in an aquarium is accompanied by some kind of disorder spilled by water around the house and a huge waste of time. In fact, all this is not so. Changing the water in an aquarium is a simple process that does not take you long. In order to perform this simple procedure, you just need to have the knowledge and, of course, to acquire all the necessary tools that will be your permanent assistants. So let's start with what a person should know when starting the water replacement procedure. First of all, this is what all aquariums are divided into large and small. Those aquariums that do not exceed two hundred liters in their capacity are considered small, and those that exceed two hundred liters in volume are the second type. Let's start with the replacement of aquarium water in small objects.

  • ordinary bucket
  • crane, preferably ball
  • siphon, but always with a pear
  • hose, the size of which is 1-1.5 meters

The first replacement fluid in the aquarium

In order to perform the water change for the first time, you need to connect the siphon to the hose. This procedure is necessary to clean the soil in the aquarium. If there is no siphon, use the bottle, after cutting the bottom of it. With a pear or mouth, draw water until the entire hose is filled. Then open the tap and pour the water into the bucket. This procedure can be repeated as many times as you need to replace. By the time such a procedure takes no more than fifteen minutes, but if a bucket without a spout, it will be a little more. When you do this for the first time, the skill will not be there yet, respectively, the time period may also increase. But this is only at the beginning, and then the whole procedure will take a little time. Aquarists know that changing the water in a large aquarium is easier than in a small one. Just need a longer hose so that it reaches the bathroom and then the bucket is no longer needed. By the way, for a large aquarium, you can use the nozzle, which easily connects to the faucet and fresh water will easily flow. If the water has managed to settle, then, accordingly, you will need a pump that helps to pump fluid into the aquarium.

Water change intervals

Beginner aquarists have questions about how often it is worth changing the water. But it is known that the complete replacement of fluid in an aquarium is extremely undesirable, as it can lead to various diseases and even to the death of fish. But it must be remembered that in an aquarium there should be such a biological aquatic environment that would be not only acceptable fish, but also had a positive effect on their reproduction. It is worth remembering a few rules that allow you to comply with all the necessary conditions for the normal existence of fish.

Water replacement rules:

  • The first two months should not replace the fluid at all
  • In the subsequent time, replace only 20 percent of the water.
  • Partially change the fluid once a month
  • In an aquarium that is over a year old, the liquid must be changed at least once every two weeks.
  • Full replacement of the fluid is made only in emergency cases.

Compliance with these rules will preserve the necessary environment for the fish and will not allow them to die. It is impossible to break these rules, otherwise your fish will be doomed. But it is necessary not only to change the water, but also to clean the walls of the aquarium and at the same time not forget about the soil and algae.

How to prepare water for replacement

The main task of an aquarist is to properly prepare the water for replacement. Taking tap water is dangerous as it is chlorinated. To do this, use the following substances: chlorine and chloramine. If you familiarize yourself with the properties of these substances, you can find out that chlorine disappears quickly when it is settled. For this it is enough for him only twenty-four hours. But for chloramine one day is not enough. It takes at least seven days to remove this substance from the water. There are, of course, special preparations that help fight these substances. For example, aeration, which is very powerful in its effects. You can also use special reagents. This is, above all, dechlorinators.

Actions when using a dechlorinator:

  • dissolve dechlorinator in water
  • wait about three hours, until all the excess is evaporated.

By the way, these same dechlorinators can be purchased at any pet store. Sodium thiosulfate can also be used to remove bleach from water. It can be purchased at the pharmacy.

Replacing water and fish

Changing the aquarium water is easy, but you should not forget about the inhabitants. Fish every time there is a change of water, are under stress. Therefore, every week it is better to perform the procedures to which they gradually become accustomed and already perceive them calmly over time. This applies to any type of aquarium, regardless of size: small or large. If you keep a constant eye on the aquarium, you often do not have to change the water. Do not forget to take care of the general condition of the fish dwelling. So, it is worth changing the algae that grow in the aquarium, because they pollute the walls. It takes care of other plants that need not only to be changed as needed, but also to cut the leaves. To add additional water, but how much it can be added, is decided in each case separately. Do not forget about the gravel, which is also cleaned or changed. You can use a filter for water purification, but often this does not affect the conditions of the aquarium. But the main thing is not only to change the water, but to ensure that the lid in the aquarium is always closed. Then the water will not be so quickly polluted and it will not have to be changed frequently.

Video on how to replace the water and clean the aquarium:

Aquariums: how to change the water in the aquarium? How much to defend the water for the aquarium

There are three main questions that are asked by people who have recently purchased aquariums. How to change the water in the aquarium? How often do this? And, finally, how long to defend the liquid to protect the fish from the effects of harmful substances? In this article we will try to answer these questions.

The main thing that needs to be learned by a beginner aquarist is that he does not breed fish or snails and does not grow algae, but contains a biological environment. This is not a cat or a dog. And not even a turtle. An aquarium is a closed ecosystem, all efforts should be directed at maintaining its livelihoods. And in a healthy environment and the inhabitants live well.

Life cycles of aquariums

If you pour water into the tank, even if it is separated, you will not create a biological sphere that is comfortable for the fish. Moreover, being released into such a sterile environment, many inhabitants can die from shock. First you need to put the soil, plant the plants and only a week later to launch the first fish. But even at this time it cannot be said that the hydrobiological environment is fully formed. This condition is called by the connoisseurs "new aquariums".

How to change the water in this type of aquarium? This should be done not earlier than two months after the launch of the inhabitants. The change of water can slow down all the processes of establishing balance, and in small containers it will cause a catastrophe and a massive death of fish. It is allowed in a month to drain 10% of the water and fill it up to the previous volume with fresh water.

New Aquariums

How to change the water in the aquarium two or three months after the launch of the first fish? The hydrobiological environment is still quite young. But already on the ground and glasses may accumulate some deposits. Every two weeks with a special siphon drain 10% of the liquid. If you do not have such an opportunity, it is permissible to change the water once a month, but then it is necessary to update 20% of the filling capacity. During this procedure, do not forget to clean the primer and glass. Also remove faded leaves of algae. Even if you have launched catfish and snails in an aquarium, there is no guarantee that they will fully cope with their task of cleaning the bottom sediments and sticking to the walls. The question arises how to clean the soil if the water is not completely drained. We will return to this issue.

Mature aquariums

How to change the water in the aquarium during this period and when will the biological balance be completely in it? This happens about six months after the installation of the aquarium. Moreover, the greater its volume, the more difficult it is to shake this achieved balance. Therefore, newcomers are advised to start large aquariums (per 100 liters), so that they, by their inept actions, do not disturb the aquatic habitat. During this period of maturity, which lasts up to a year, we only do that we change 20 percent of the liquid every month, removing garbage from the ground and cleaning the mucus from the glasses. However, you need to carefully monitor that the water is not "bloomed" (not green). With regular cleaning it will be a long time to enjoy the crystal clear eye of the aquarium and the agility of the fish that inhabit it.

Period of old age: reboot

After a year and a half, the habitat in a closed container begins to degrade. To return her second youth, it is necessary to change the water every two weeks. Along with regular updates (in the amount of 20% of the total volume), the following procedure can be practiced from time to time. For experienced aquarists, it is called super-substitution. So, your tank is filled with water. Drain 60%, clean the walls and add only 30%. The next day, remove half of the remaining liquid and add the same amount. We repeat this manipulation for two more days. And, finally, topping up the aquarium by 30% to the previous level. Thanks to super substitution, the concentration of harmful substances will decrease by 92%.

How to change the water in the aquarium

So, we have considered the proportions that must be adhered to so that the fluid update does not damage the biological balance of the living environment. But how to change the water? Pet stores sell special siphons (with a manual blower for pumping air or working on batteries), but these devices also have a more budgetary alternative. Take a regular straw. It is better not to use a rubber hose - rubber emits harmful substances. The transparent PVC tube will be optimal. Wrap one end of it with a piece of gauze. Prepare a bucket - set it below the level of the aquarium. Dip the tip of the tube with gauze into the water, and take the second in the mouth. Begin to draw in air until the liquid is suitable. After that, with a quick movement, lower the tip of the tube into the bucket. Water under the laws of the pouring of the tank into the tank. You just have to control its quantity. And with the tip of the tube with gauze, drive along the walls and the ground to remove the adhering dirt.

Water quality

The amount of fluid added is not the only indicator that is important for the health of the inhabitants. The quality characteristics - temperature, salinity (for marine fish) and water hardness in the aquarium - are also of great importance. Sharp change of any indicator is a shock for the inhabitants. For tropical fish, topped up water should be heated to a temperature of 1-2 degrees higher than that in the aquarium. The marine biosystem also needs the liquid to have the right ppm. To do this, in distilled or reverse osmosis water for three days dissolve salts NaCI, MgSO4x7H20, KBr, SrCl2x7H20, MgCl2x6H2O, Na2CO3, KCI, CaCl2, H3BO3, NaF and NaHCO3.

How much to defend the water for the aquarium

It is not a secret for anyone that not fresh spring water flows from our taps, but a liquid in which almost the entire periodic table is dissolved. It is easy to notice by conducting a simple experiment. Take a can of water and see what happens to it over the course of a few hours. First, gaseous impurities. It would be good if it was oxygen. Although an overabundance is unhealthy for fish. The bubbles through the gill slit penetrate the bloodstream and can provoke thrombosis. But ozone, which in some cities is used to disinfect water, is poison. The same undesirable elements are chlorine and its compounds. It is good that the gases come out of the liquid quickly - it takes an hour. But the limescale and rust accumulated from old water pipes, settles at the bottom of the can after 12 hours. Dissolved impurities can be neutralized with special conditioners (for example, Sera Toxivec). Here is the answer to the question. It makes no sense to defend water for more than a day. Everything that could precipitate or evaporate has already done so. And then the water is just beginning to fade, harmful microorganisms start in it and dust rushes in.

In what situations should be carried out a complete replacement of water

Only emergency cases - the massive death of the inhabitants or the global "blooming" of water - can cause the entire aquarium to be emptied, sanitized and started all over again. But if the liquid still does not emit a sharp unpleasant smell, it is fixable without a complete replacement. To remedy the situation, you should understand the reason why the water in the aquarium turns green. Perhaps the whole thing in the wrong light. Then the situation will be corrected simply by rearranging the aquarium into a more obscured corner of the room. If the reason was the reproduction of primitive floating alga euglena, then you can buy live daphnids - this is cleaning green scum and feeding for fish. Somiki, pecilia, mollies, snails are also happy to devour euglena. In pet stores you can buy special chemicals from the rapid flowering of water.

How to change the water in the aquarium with fish?

The fish living in the aquarium require constant maintenance of a certain composition of water, and, despite the filtration and aeration carried out, there comes a time when you have to change the water in the aquarium. This is a mandatory process, which can be carried out in part or in full.

Novice aquarists wonder: how to change the water in the aquarium with fish, should it be defended? It is advisable to check the tap water for the content of harmful substances in it, and if they are present, the water should be defended for three days, and the use of special cleansing compositions is also permissible. If you do not do this, you can simultaneously change no more than 20% of the composition of the water in the aquarium.

Replacing the full amount of established water in the aquarium, and forming a particular ecosystem, should be extremely rare, it negatively affects the fish and plants, they are difficult to get used to the new water and often die. Even making a partial replacement of water, it is worthwhile to worry about maintaining its temperature, as well as gas and salt composition.

If there is a need to completely change the water in the aquarium, you should temporarily relocate all living organisms to another tank, completely clean the aquarium, fill it with settled water, and after a few days when the biological balance is restored, return the fish and plants to their original place.

Features of the water change for the aquarium with cockerel fish

Cockerel fishes best of all feel in big aquariums, water in which not less than 27 degrees. How to change the water in the aquarium with cockerel fish? There are no special requirements, you just need to know that this fish does not need frequent changes of water. In this case, the cock carries both soft and hard water. Changing the cockpit water to a new one, it is necessary to add the old part, while necessarily observing the temperature regime. At the time of water replacement, the fish should be deposited in another container.

How often to change the water in the aquarium :: Fish aquarium

How often to change the water in the aquarium

The health and life of the fish living there depends on how often the water in the aquarium changes. At the same time, it is important to take into account whether this is a new aquarium or "housing", in which the fish are already for a long time.

The question "opened a pet shop. Business is not going. What to do?" - 2 answers

Instruction

1. Remember that frequent changes in the water in the aquarium leads to the occurrence of diseases and the death of the fish. This is precisely the mistake of many newcomers: fresh water is not at all an ideal option, and all efforts to replace it can lead to undesirable results.

2. Do not change the water in the new aquarium for at least two months. When water is first poured into the tank and fish are launched there, the habitat is too unstable. If the aquarium is large, frequent replacement of fluids will make it difficult for your “pets” to adapt to new conditions, and their development will slow down. If the capacity is small, such an error can lead to the death of all its inhabitants. Carefully monitor the state of the aquatic environment - if it is healthy, then the fish will be able to live in comfort. If problems arise, it will affect all inhabitants of the aquarium.

3. When it will be 2-3 months after the start of the use of the new aquarium, begin to change the water little by little. It is allowed to replace no more than 20% of the total volume of the liquid, moreover, it can be done no more than once every two weeks. The best option is to replace 15% of the volume of water once a month. However, if you have such an opportunity, add 10% of pure liquid every 1.5 weeks. Each time, performing this procedure, it is necessary to collect the garbage accumulated on the ground and to thoroughly clean the glass.

4. After 3-4 months, change the topping-up mode again. The fact is that six months after the start of the use of the new aquarium, the aquatic environment is completely stabilized, and for fish there begins a period of the highest level of comfort. Now it will be enough to change 20% of the volume of liquid once a month. At this stage, your task is not to spoil the established biological balance.

5. Update the aquatic environment one year after filling the aquarium. Within two months, it will be necessary to replace 4-5 times by 20% of the volume of water, moreover, each time it is necessary to wash out part of the soil. As a result, after 2 months all the glass and other elements of the aquarium should be completely cleaned. When you finish this procedure, you can again change 20% of the water once a month with minimal “cleaning” of the soil. A year later, the cleaning will have to be repeated again.

6. Change the water in the aquarium completely only in the most difficult situations when it is not possible to restore a normal habitat for fish. We are talking about cases when water "strongly" blooms, becomes too turbid, mucus appears on the surfaces, or when dangerous microorganisms that kill fish appear in the water.

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How often should I change the water in the aquarium

In the aquarium periodically accumulated waste of fish and microorganisms, as well as harmful substances such as phosphates and nitrates. To get rid of them will help partial or complete replacement of water.

The question "opened a pet shop. Business is not going. What to do?" - 2 answers

You will need

  • - watering can;
  • - 2 clean buckets;
  • - 2 m of aquarium hose or primer;
  • - a towel.

Instruction

1. If you have just purchased an aquarium, planted aquatic plants and launched fish in it, then you should not change the water in it during the first two months. At this time, the environment is not yet stable and it is not yet necessary to interfere in the formation of a microclimate.

2. After a couple of months, you can begin to replace the water. Experienced aquarists advise, as rarely as possible to resort to a complete replacement of water in the aquarium, but to replace a small amount of water, approximately 20% of the volume of the container must be made at least once a week.

3. To do this, prepare the water in advance. Put it in clean plastic buckets, which should only be used to work with the aquarium. At the same time, they should not be washed with any cleaning agents, as they can have a detrimental effect on aquatic inhabitants. Let the water stand for a couple of days. During this time, harmful substances such as chlorine will disappear. The water will become softer and acquire an optimum room temperature. If necessary, strain the water to remove impurities.

4. Put a clean bucket on the towel. Then drain 1/5 of the water from the aquarium with a hose. Put one end of it in the aquarium, then suck in a little air through the second, thanks to this intake, the water will flow into the bucket.

5. Clean the bottom and walls of the aquarium from organic matter accumulated on them. For garbage collection, use a special siphon or primer. Then pour in the separated water with a watering can.

6. Sometimes it is necessary to replace more water to half the volume of the aquarium. This disrupts the biological balance in the aquarium environment, so this procedure should be performed only in emergency cases, for example, if the fish began to be etched with copper or nitrates. With such a cardinal water change, some plants and fish can die, but within a week the microflora will recover and you can continue to care for the aquarium, as usual, replacing a fifth of the water weekly.

7. Such a cardinal measure, as a complete replacement of water, should be carried out as a last resort, if the aquarium begins to flourish rapidly, fungal mucus appears, and the water in it is constantly turbid. This is usually due to improper maintenance of the aquarium or when introducing dangerous microorganisms.

8. When water is completely replaced, it is necessary to remove all the inhabitants, drain the water completely, remove all plants and decor. Then rinse everything thoroughly, plant algae again, install equipment, pour in soft water. Run microorganisms, bacteria and fish. The first water change will need to begin only after 2-3 months.

How much should I change the water in the aquarium?

Sanek Rotar

After the aquarium is planted with plants and populated with fish, an amateur should strive to maintain a sustainable regime in it. For the normal development of fish and the prevention of a number of diseases, a certain chemical composition and biological equilibrium, maintained for many years, are necessary in water.
Water should be refilled as it evaporates, cleans the glass, the aquarium soil only partially, no more than 1/5 - 1/3 of the volume of the aquarium. Moreover, even a partial replacement of water should not drastically change both its gas and salt composition.
In aquarium fish farming, complete replacement of old water is extremely rare. Even with the massive death of fish it does not completely change. When completely replacing the water, it is necessary to be sure that the new water meets all the hydrochemical parameters required for the existing fish species.
Completely change the water in the aquarium in exceptional cases: when introducing unwanted microorganisms, the appearance of fungal mucus, rapid flowering of water that does not stop when the aquarium is darkened temporarily, and when the soil is very dirty. From the complete change of water plants suffer: there is discoloration and premature dying of the leaves. If the aquarium is biologically correctly populated, then plants, fish and bacteria in the soil and water can replace a good filter.
A common opinion among novice aquarists about the need for frequent water changes as a prerequisite for the normal maintenance of exotic fish is deeply mistaken. Frequent changes of water in the aquarium can cause illness and even death of fish.
In most cases, a water change — although a regular change of 1/5 of the water in an aquarium is always desirable — does not have a living stage of a room pond. This life in an aquarium, depending on our ability and desire, can last from several days to 10-15 years.

Jeannula

You need to buy a filter and a heater, because the change of water for them is still a shock. And in a normally well-maintained aquarium, I change every 1.5-2 years.Now, yes, another year has passed, but the filter is strong and cleaning is not required.

Victoria

How often should I change the water in the aquarium?
After the aquarium is planted with plants and populated with fish, an amateur should strive to maintain a sustainable regime in it. For the normal development of fish and the prevention of a number of diseases, a certain chemical composition and biological equilibrium, maintained for many years, are necessary in water.
Water should be refilled as it evaporates, cleans the glass, the aquarium soil only partially, no more than 1/5 - 1/3 of the volume of the aquarium. Moreover, even a partial replacement of water should not drastically change both its gas and salt composition.
In aquarium fish farming, complete replacement of old water is extremely rare. Even with the massive death of fish it does not completely change. When completely replacing the water, it is necessary to be sure that the new water meets all the hydrochemical parameters required for the existing fish species.
Completely change the water in the aquarium in exceptional cases: when introducing unwanted microorganisms, the appearance of fungal mucus, rapid flowering of water that does not stop when the aquarium is darkened temporarily, and when the soil is very dirty. From the complete change of water plants suffer: there is discoloration and premature dying of the leaves. If the aquarium is biologically correctly populated, then plants, fish and bacteria in the soil and water can replace a good filter.
A common opinion among novice aquarists about the need for frequent water changes as a prerequisite for the normal maintenance of exotic fish is deeply mistaken. Frequent changes of water in the aquarium can cause illness and even death of fish.
In most cases, a water change — although a regular change of 1/5 of the water in an aquarium is always desirable — does not have a living stage of a room pond. This life in an aquarium, depending on our ability and desire, can last from several days to 10-15 years.
What does that require? Replacing water by 1/5, up to certain limits, of course, (topping up with non-living tap water) will shake the equilibrium state of the environment, but after two days it will be restored. The larger the aquarium, the greater the resistance in it against our inept interventions.
Replacing half of the medium will break the equilibrium stability, some fish and plants may die, but after a week the other homeostatism of the medium will again be restored.
Replacing all the water with a plumbing can completely destroy the environment, and everything will have to start over.
* If you decide to start an aquarium, and have not dealt with it before, but there is a desire to arrange everything not hastily and somehow, start with a small reservoir of 100-200 liters. It is just as easy to establish biological balance, to form a living environment, as in a small one, and to destroy it with its inept actions will be much more difficult than in an aquarium with a capacity of 20-30 liters.
In an aquarium, we do not contain aquatic animals and plants, but aquatic habitats, and the main task of an aquarist is to maintain an equilibrium, healthy state of this particular environment, and not its individual inhabitants, because if the environment is healthy, then the inhabitants of this environment will be well . The habitat in the period of its formation (when plants were planted in the ground, and a week later the first fish were launched) is extremely unstable, therefore it is strictly prohibited to interfere with the work of the aquarium at this time. What do we have to do?
Within two months, it is impossible to replace water: what's the point, instead of semidiving water, which is just turning into residential water, to bring in a sterile water supply again? In a large aquarium, changing water will slow down the formation of the habitat, while in a small aquarium this intervention will cause a catastrophe and everything will have to start over.
After two or three months, the emerging aquatic habitat in the aquarium will enter the youth stage. From this point until the complete reorganization of the aquarium, it is necessary to begin again to replace 1/5 of the volume of water once every 10 to 15 days, or monthly. It is as if the inhabitants of the aquarium do not need such an update.

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