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How much time to defend the water for the aquarium

maintenance, care, compatibility

This issue has been considered repeatedly in the forums, in the reference literature, and it would seem that it does not make sense to discuss anew how much to defend and how to fill in the water during the next substitution. In most cases, the arguments of opponents are as follows: “the longer, the better the water,” “let all the muck disappear,” “a week is needed for everything to work out.”

In this case, the aquarists are not in a hurry to justify these arguments, and water changes should be carried out regularly. Consider in detail the time interval for the preparation of water.

The main reason for this is harmful impurities that can harm the inhabitants of our aquarium. After settling, solids sometimes appear in the sediment.

Initially clear water after a while can grow turbid.

Many aquarists leave the water for substitution to breathe for a few days, and so that all harmful suspensions evaporate for a week. This assumption is partly true, but it cannot guarantee the quality of the prepared water.

Before we do something, we always know why we need to do it. By keeping tap water outside the pipeline, we are trying to improve its performance so that it does not harm our fish.

In other words, when defending water, we get rid of most of the malicious components.

Conditionally harmful substances in the water can be divided into:

  • solid (precipitates to the bottom);
  • gaseous (volatilized from water to the environment);
  • liquid (initially dissolved and remaining in water).

The process of settling can affect only solid and gaseous mixtures, and it does not affect liquid substances in any way.

This type of substance evaporates through the surface of the water. Here one can consider the quantitative and qualitative compositions of dissolved gases in water.

Gaseous substances in natural water enter into chemical reactions with other dissolved elements, due to diffusion they constantly circulate through the water mirror and are harmless and harmless to fish.

The method of water disinfection for your area can be found in the local water utility, this information will not be superfluous. At new water treatment plants, ozone and ultraviolet cleaning is applied, and such water can be added without fear (it is pointless to defend against oxygen and photons).

The outdated chlorine cleaning method is gradually becoming a thing of the past, but is still in use. Chlorine and its derivatives are poisons.

They allow the destruction of both harmful bacteria and beneficial ones, as well as depending on the concentration of large animals and even humans.

If you pour fresh water from the tap, then you can observe a certain amount of bubbles on the walls of the tank. They are formed due to the presence of excess gases dissolved in water.

When refilling fresh water directly into the aquarium, gas compounds appear on the plants, the skin of the fish, and the aquarium.

If the fish gets an excess of gas, then bubbles form in the circulatory system, which leads to blockage of blood vessels, gas emboli and, as a result, to death.

This can happen if the aquarium fish, bringing home, immediately settle into a container with fresh water. Beginners aquarists are always warned that it is impossible to do so!

Also, the appearance of bubbles can be caused by the method of pumping water into the water supply system. Cold water pumped into the pipes under high pressure loses it sharply at the exit, and the gases evaporate into the atmosphere. If you type this water in a glass, it will be covered in bubbles that pop up along the walls to the surface.

It is necessary to defend a little.

With regular water changes in the aquarium, most likely, there will be no bubbles. Fresh and clean water does not greatly increase the number of gas-containing mixtures in the total volume, so you can not be afraid of the appearance of single bubbles on the fins of the fish.

From all of the above for gas mixtures it can be noted that:

  • chlorine poses the greatest danger;
  • upholding spend more than a day does not make sense;
  • in order to speed up the process of settling, it is necessary to provide strong aeration in the water tank (even simple mixing with a pump will significantly shorten the time for gas mixtures to exit);
  • For the use of fresh water (without upholding), you can add special components to it, which are very large in the sale, and after 10-15 minutes the liquid is suitable for adding to the aquarium.

Why defend the water in the aquarium for fish, and how much benefit will this procedure bring? Such questions are often asked by novice home-water lovers and more experienced razvodchiki.

In fact, settling is a necessary measure to prepare the aquarium for launch, because no matter how much you clean the scenery and glass of the tank, water is its main component, a living environment where both visible and microscopic creatures will live and develop. objects. Therefore, the process of settling involves the study of the rules for the preparation of different types of water.

Water from their other aquarium can be useful – it has a long-established microflora and biological balance. For fish it is a reliable source of trace elements that are beneficial in terms of recovery.

However, without knowing the history of another aquarium, it would be correct to find out what freshwater fish lived in it, what it was sick with, and what quality its water was. You can ask this question from the owners of the reservoir, or conduct observations on their own.

For the experiment you need only a few days, some free time, and, of course, old water.


Pour the liquid into a clean glass tank, let it stand in it for several days. Noticing cloudiness, precipitation – you know, it is not entirely safe. It is possible to pour a part of such water into an unprepared aquarium with plants.

If their appearance has deteriorated – a sure sign that the fish should not live in a pond with such water. But the best way is to start a tank with new water on your own, or to seek help from trusted distributors.

Water change in the aquarium, what kind of water is needed for the aquarium?

(water preparation)

Let’s talk about the questions asked in order:
In order for chlorine to evaporate and a 24-hour excess of dissolved oxygen will be enough to keep the tap water. The maximum water for the aquarium defend 14 days.

This should be done in a bowl with a wide neck.

I note that in pet stores sold a large number of specials. preparations for adaptation of tap water (for example, AquaSafe from the Tetra series, etc.). In addition, these drugs have additional additives that improve the quality of aquarium water.

I strongly recommend using them.

Frequently asked questions: About changing aquarium water, for example, is it possible to replace aquarium water (1/4 volume) with undisturbed tap water?

– Nothing bad can happen (one thing, but: it should be about the same temperature as in the aquarium, do not pour ice water from the tap). But still, if you are a caring owner or fish are expensive … Do not be lazy to defend the water.

When changing aquarium water, always remember that old water is always better than fresh water. In many sources, they talk about the need to replace the weekly aquarium water to fresh. Personally, I disagree with that.

Since the older the aquarium water, the better it is configured biological balance. I replace the aquarium water in my aquariums about once a month and I think that this is quite enough.

For ten years aquarium management complaints from aquarium fish on this issue have been reported.

Making conclusions and summing up, I emphasize:

– Frequent change of aquarium water is not needed!

– The frequency of changing the aquarium water to fresh depends on the volume of your aquarium. The larger the aquarium, the less need to replace the aquarium water.

– The change of aquarium water can be done with undisturbed water (up to 1/5 parts). But not desirable. )))

– The clouding of aquarium water after a fresh substitution is a direct evidence of an imbalance in the aquarium. (clouding will pass by itself, in 3-5 days).

– Answering the question what kind of water is needed for an aquarium and fish? I will say – better than old than new. If the water is green, dirty or muddy – use aquarium coal and other specials. drugs.

In addition, consider the specifics of your fish. For example, discus – very picky to the conditions of detention and require frequent replacement of new super high-quality water and high temperature.

– Carrying out a complete change of aquarium water (restarting the aquarium), pour into the container and leave at least 1/3 of the old water. Exception, disease and quarantine aquarium!

– Changing the aquarium water should follow the cleaning of the aquarium, and not vice versa.

I recommend also to read the article. AQUARIUM WATER from which you will learn about the qualitative components of aquarium water and methods for balancing them in the home.

Video about changing the water in the aquarium:
Aquarium for beginners
Aquarium water temperature
Boiled thawed or distilled water for aquarium. Category: Aquarium Articles / EQUIPMENT AND FACILITY AQUARIUM | Views: 34 652 | Date: 5-03-2013, 10:11 | Comments (2) We also recommend reading:

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An aquarium with fish not only decorates the interior of any home, but also helps to relax after a hard day. Although the fish and silent, watching them is very, very interesting.

If you are thinking about whether or not to get a fish, you need to remember that you need to take care of them, and very carefully. It is necessary to choose the aquarium itself, the fish, the necessary accessories, to adjust the access of light, air, and, of course, the main point in the care of the fish is water.

Before you prepare the water for the aquarium, you need to prepare the aquarium itself for further settling with fish.

To do this, wash it thoroughly with soap or table salt, pour water into it and allow it to stand, so that all traces of the substances used to clean it are completely washed off the walls.

After the aquarium itself has been prepared, you can start decorating it with stones, soil, plants, and then pour water into it and launch fish into the aquarium to test their new home.

It is worth noting that the preparation of water for the aquarium varies depending on whether you make the aquarium with sea or running water.

In most household aquariums pour the usual running water, before it is thoroughly cleaned. Normal water contains many chemical elements and compounds that can negatively affect the life of the fish, so water must be defended for from two to seven days.

One of the main elements of this is chlorine.

To minimize the amount of chlorine in the water, pour the water into the vessel in which it will settle, with a powerful jet or with the help of a shower – this way chlorine will evaporate more quickly. You can warm the water to 70-90 degrees, and then leave it for a few days in a strong vessel.

It is worth noting that when boiling in water all microorganisms die, which can be useful for the existence of fish, therefore, dechlorinators are often used to disinfect water from chlorine – they are sold in pet shops. You can also use activated charcoal – special charcoal for the aquarium is also sold in stores.

Another adverse compound for fish life is ammonia. For the purification of water from it, a phytomethod has recently been used: a submerged rocole can absorb ammonia.

This plant is also advised to use in new aquariums – they will absorb all that is not necessary.

If you want to completely disinfect the water from all aggressive elements for the life of the fish, you can also use special filters – both at the stage of water preparation and in the future, with an already existing aquarium.

Anyway, the main thing in water preparation is its settling and its room temperature: only after that you can safely run the fish into their new home.

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