How Should The Filter Work In The Aquarium

How to install and use Fish Tank Filters

The Fish Tank Filter performs a cleaning function, removing chemical and mechanical impurities from the water. In order for it to function correctly, it must be correctly placed in the tank. The life of all the inhabitants of the aquarium depends on his work.

How to put internal filters?

Internal filters are installed inside the aquarium. The most popular – internal pump filters and airlift. They are inexpensive, they are easy to install yourself, they are convenient to use during operation. However, these mechanisms have their drawbacks – they must be cleaned of dirt almost every day, they are overall and noisy. Before purchasing such a water purifier, determine whether it fits in your tank.

How Should The Filter Work In The Aquarium

Will it be possible to install the internal filter correctly the first time? Completely if you carefully read the instructions. The device must be placed in the tank when it is half filled with water, when there are plants planted in the soil. Before turning on the filter in the network, it should be assembled in parts, and mounted on the wall or above the aquarium.

Water purification devices such as internal filters should be completely immersed in the aquatic environment. Above the filter should be another 3 cm of water. The device itself should not touch the bottom. If you bought an internal filter, or made it yourself, then attach it correctly using suction cups to the glass wall.

See how to disassemble, assemble and install the internal filter.

Included with the branded filter is a hose for air supply. In the homemade device, it should also be present, however, the principle of attachment is the same. Take one end of the tube and attach it to the special opening of the filter, the other end of it out above the water and fix it with the help of the fastened material to the upper edge of the tank wall. The tube must be above the water level, otherwise the air will not be properly sucked.

How Should The Filter Work In The Aquarium

On the tube or directly on the filter should be an air supply regulator. Its location affects the flow of water in the aquarium. After installing the water purification device, the regulator should be correctly placed in the middle position. Then watch the behavior of the fish – some will love the flow of water, others will avoid it. Adjust the water flow level so that the fish feel comfortable.

Internal cleaners should be installed after they are completely immersed in water. Before you get it out of the water for cleaning, the device must be disconnected from the power supply. Also, do not leave the mechanism turned off in the water, and turn it on after a long period of stagnation (if you did not have time to clean it).

How Should The Filter Work In The Aquarium

How to put external filters?

External filters are more bulky, and more expensive for the price. Despite the financial costs, these types of water purifiers have many advantages. The most important thing is fillers, which consist of filtering materials. Periodically they need to be replaced, which is quite simple to do.

See how to clean and replace the filler in the external filter.

External cleaners are not very noisy, they are suitable for spacious aquariums from 100 liters and more, they provide a biological method of water purification. In such an apparatus there may be several fillers: stones, sponge, rings, etc. Therefore, experienced craftsmen with the availability of skills make external filters with their own hands. The principle of operation of the external system of cleaning the reservoir: the aquarium water gradually pass through a special tank, in which there is a filler of filter materials. Then purified water flows back through the tube to the tank.

How Should The Filter Work In The Aquarium

Clean this device is not difficult. The cleaning process should occur in the aquarium water itself, which must be drained into a separate container. Further filtering matter is gradually replaced. For example, a sponge cannot be replaced completely, but only a part of it. Cut off half of the old sponge and put a new one in its place. After a few days, useful bacteria multiply in it, and the biological environment will not be disturbed.

How Should The Filter Work In The Aquarium

To install an external device for water treatment correctly, you need to read the instructions. If it is homemade, then it must first be assembled by placing all the fillers with sponges in their cells. It is also required to close both taps where the tubes are connected.

The device will be able to function properly if it is installed below the water level (20 cm). To the external filter are 2 tubes that take water and release it. They need to be fixed on opposite corners of the tank. When all parts are connected to a fully assembled device, it will need to be filled with aquarium water using a drain. Otherwise, the air from the tubes will not allow the device to function properly.

How Should The Filter Work In The Aquarium

To release the air plugs, you must connect and open a hose that takes water. Wait for the filter to fill with water. Do not allow water to flow out of the hole for the second tube. After filling the unit, turn off the inlet hose.

After that, you need to connect a hose that releases water. To do this, turn off its valve, and water will accumulate in the hose. Only after these procedures can you connect it to the system of water intake from the tank. You can later open two taps and connect an external filter to the power supply. Only with the observance of all the rules of safety and operation, the mechanism will work as it should. Never turn on the machine if you notice mechanical damage on it. Be careful in working with aquarium equipment to ensure a comfortable life for fish and plants.

How does an Fish Tank Filter work?

This article is aimed at newbies – aquarists. Many of them make a mistake: periodically turn off the Fish Tank Filter for a short time. However, this is not recommended. Moreover, the shutdown adversely affects the purity of the water and is meaningless. To verify this, consider the filter device.

This is a device whose components are a cartridge with filtering material and a turbine head. In turn, the filters are divided into internal and external. Internal – these are those that are attached to the walls of the aquarium from the inside. Remote, or popularly called "buckets", installed next to the aquarium, connected to it with a hose. External filters have a larger volume than internal ones.

Most beginners face the same problem: the Fish Tank Filter does not work, let’s try to understand how the filtering process takes place. It would seem that the system is quite simple. The material in the filter accumulates dirt and when it becomes too dirty it must be washed with warm water and put back into place.

Read more:  How To Make An Internal Fit Filter?

If you do not forget to do it all the time, the water in the aquarium will maintain its purity and transparency. But It is worth noting that with this use of the filter there will be white cloudiness. And the more often you clean the filter, the more it will be.

If you look deep into the process, you can learn that it consists of two phases: biological and mechanical. Considering these phases, you can understand how the filter for the aquarium works. The dirt retention on the filter material is attributed to the mechanical phase. After some time, the bacteria saprophytes decompose this dirt to simple mineral substances such as water, carbon dioxide, nitrates and others. This phase is called biological. And if its implementation proceeds without any external intervention, the water in the aquarium will always be transparent.

We can say that the filter for the aquarium is a big mechanism, filled with a huge number of microorganisms. And if you constantly wash the cleaning device, it will be impossible to save the life of these microorganisms. Therefore, the biological phase will not be fully implemented. This will lead to the fact that the water in the aquarium is filled with semi-decomposed substances, and microorganisms will accumulate in it that make it white and turbid. The bacteria do not linger in the filter, and it is meaningless to hope to filter them out.

What to do with it? The answer is nothing. Over time, a sufficient number of bacteria will accumulate in the cleaning device, and the unpleasant dregs themselves will gradually begin to disappear.

How to install a filter in the aquarium

The technology of proper installation of the water filter is always of interest to novice aquarists. And this is natural, since so much depends on this device, including the physical condition of the “tenants” of the artificial home reservoir.

Types of filters by the way they are installed

There are 3 main types of aquarium water purifiers: external, internal and bottom. Accordingly, the installation of each such device depends on its belonging to one or another type.

So, external filters – they are also called canister filters – are installed outside the aquarium, and the suction and discharge hoses are lowered inside the tank (or mounted through special adapters and openings). The principle of installation of the bottom cleaner is already clear from the very name: it is placed directly on the prepared bottom of the “can”. It should be noted that these 2 types of devices are used, as a rule, in large-capacity aquariums.

Most often, beginners prefer to clean the habitat of their pets with the help of small filters located inside the aquarium. Such devices in everyday life is also called "glasses." These devices most often can be seen in small artificial home and office reservoirs.

How to mount an internal filter

First, the device must be assembled according to the recommendations set forth in the instructions for use. Can’t wait to check it at work?

You should not hurry, because the filter must first be properly fixed in an aquarium filled with water. And, beginners, as a rule, have some questions. How deep should the glass be dipped? What is plastic flexible transparent tube for?

The vast majority of internal water purifiers are attached to the wall of the aquarium in a vacuum way using special suction cups. These suction cups are included. Prerequisite: the filter must be completely submerged in water, the height of the water level above the top of the device must be from 2 to 5 cm.

A transparent flexible tube serves to supply air to the device and is attached to its “nose”. The other end of the tube should be outside the aquarium, outdoors.

It would seem that you can already run the "glass" in the work. However, experts recommend making the first inclusion, removing all living creatures from the aquarium. You never know what! What if the device has a manufacturing defect? It is better not to risk and move all the fish for a short time in a small sump. If the first inclusion showed the normal operation of the technical device, pets can immediately run into their water house.

After the first power up, it is recommended to set the power regulator, which is available on each filter, to the middle position. It takes some time to observe the condition of your pets and then empirically determine the optimum power of the filtering device.

Features of the external filter installation

The external Fish Tank Filter, which is often called the “canister”, is usually installed in the cabinet under the aquarium, well below the level of the aquarium water. After preparing for work according to the instructions, the releasing and retracting hoses, which are attached to the device, are lowered into the “can”. Inclusion is in progress.

Everything is very simple, but it seems so only at first glance. If we consider only the aesthetic factor, then this method of installation is absolutely correct. Many owners of ornamental fish attach hoses through specially prepared holes in the bottom of the aquarium.

However, you need to look at the problem from the other side.

Depending on the “canister” model, its pump can lift water up to 3 meters high. And this, in turn, promises high power consumption and increased energy costs. That is why many aquarists place their “cans” either behind or at the side of the aquarium at a height approximately equal to the middle of the water level. There is no need to talk about aesthetics here, but the energy savings are quite significant.

Installation of the bottom filter

Already from the name of this cleaner it is clear that it is installed on the bottom of a water house for fish. But the choice of this type of filter is resorted to only when there is very little or no decorative bottom aquatic vegetation in the aquarium.

Such a device is a relatively thin plate with an internal filter material and a multitude of holes through which water flows. Some believe that such a plate with tubes attached to it can be simply put on the ground and that will be enough. This is a misconception – the bottom cleaner should be installed, not just put.

First, remove the soil from the bottom of the aquarium (or from a separate section) and put a plastic frame that will raise the false-bottom by 2-3 mm. Only then can the technical device be closed with a primer, and then put it into operation.

Read more:  Internal Filter For Aquarium As Is

Not only the purity and high-quality chemical and biological composition of water, but also the degree of air saturation depend on the proper installation of any Fish Tank Filter. In addition, it determines the reliability of the device itself. In any case: before the water purifier is put into operation, you need to carefully read the instructions attached to it and strictly follow the rules specified in it.

How to install the internal filter in the aquarium, see the video:

How to install the internal filter in the aquarium :: how long should the filter in the aquarium work :: Equipment and accessories

Tip 1: How to install an internal filter in the aquarium

For a man, one of the most placating spectacles is watching how fish swim. It calms the nerves and relaxes the body, and most importantly is pleasant to the eyes. But you need to not only watch them, but also take care of them. In particular, take care of the purity of the water.

How Should The Filter Work In The Aquarium


1. Find the right filter for your aquarium, a particular manufacturer. Thanks to the right choice, you will get rid of further problems with filters.

2. Consult with experts or vendors, they will help you choose the right filters, tell you how to properly care for the aquarium and its inhabitants, how to clean it, how to monitor the degree of contamination.

3. Buy an internal filter suitable for your tank. Unpack, read the instructions and try to install it according to the instructions in the aquarium. It must be filled with water. Remove all the fish from the aquarium, so that they do not interfere with the installation of the filter.

4. Immerse the internal filter in water, completely, so that from above it is covered with water to a depth of about ten to fifteen millimeters.

5. Attach to the walls of the aquarium internal filter. They usually have velcro, due to which they are attached to the walls of the aquarium. This will help to fix it at a certain level and not to move either way or the other.

6. Install the filter so that the tube to which the hose is attached exits. This will facilitate cleaning and give your fish a clean environment in which they will live. Through this tube the waste water comes out, which enters through a sponge located at the end of the filter tube.

7. Plug the filter into a power outlet so that it starts working. Do not forget about safety, including it, checking how it works.

8. Check if the internal filter is working on your tank. To do this, you need to bring your hand to the top outlet, if you feel the stream of water, then the filter is functioning as needed. Take a few minutes to see if it works correctly.

9. Put the fish in the aquarium and see if they are comfortable with the filter. If everything is in order and it works as it should, you can continue to enjoy your pets. The main thing do not forget to feed them and monitor the cleanliness of the aquarium. A clean environment will help them to extend the maximum life and, thereby, longer delight you.

Tip 2: How to install Fish Tank Filter

If you decide to install an aquarium at home, then you cannot do without an aquarium. filter. His choice should be treated with special attention, since the quality of water in your underwater kingdom will depend on this device.


1. Today, there are many varieties of Fish Tank Filters: internal, external, bottom, aerator filters, as well as filters that produce mechanical filter(as filter used filter thread, sponge or crumb), chemical filter(using activated carbon or zeolite), as well as biofiltertion (microorganisms are used in the filter that purify water from harmful impurities).

2. The filter must be selected based on the volume of the aquarium, as well as the functions that it will have to perform. For example, external filters are easy to use, and bottom filters help create a more favorable microflora in the aquarium, and they need to be cleaned every two to three years. For small aquariums, an ideal option would be a filter aerator, which combines the functions of cleaning and saturating water with oxygen. In any case, before you choose any specific filter, you should consult with a specialist.

3. Before installing the filter, carefully read the instructions. If you purchased a chemical filter, you must fill it with the adsorbent that comes with it.

4. Before installation filter prepare an aquarium. Rinse it thoroughly and fill it with water to see if the seams are leaking. Drain and place pre-prepared soil on the bottom of the aquarium. If you purchased a bottom filter, you must first install it under the ground. Pour about one third of the water, then plant the plants. If you choose an internal filter, then you need to install it at this very moment. Attach the filter with special velcro or retaining bracket, then fill the aquarium with water to the required level. An external filter can be installed after filling the aquarium with water.

5. After filling the aquarium, turn on the filter in order to check its operation. While the aquarium will be balanced (about two weeks), the filter must be kept on. As soon as you see that the water has disappeared from the water, then you can safely inhabit your underwater world with fish.


When buying an aquarium, do not forget that in addition to appeasement from it, you will still take care of its inhabitants and their habitat, that is, an aquarium. Regularly keep it clean.

Adjusting the air supply to the Fish Tank Filter

Aquarists. And should the filter always work in an aquarium or is it better to turn it off for some time? ATP =)

Rita Dyomina

"In modern aquarism, filters are one of the most important means of livelihood. Aquarium is a closed biological space in which there is a constant accumulation of organic residues: fish produce excretions that pollute water; plus uneaten food, dead plant parts, etc. In natural waters, concentration waste in the water is fairly stable, since some of them are processed into minerals and assimilated by plants, and the other part is carried out along with the water flows. The planting density of fish significantly exceeds the natural one, so the metabolic products and their inorganic derivatives can have a negative impact on its inhabitants. The main methods of removing excess mineral and organic residues from the aquarium and establishing acceptable living conditions for fish in it are filtering, cleaning, and water changes. " The filter should work around the clock. When the filter is turned off for more than two hours, everything that has been filtered in the filter element will decompose and if it is turned ON WITHOUT WASHING, then everything will be thrown into the water on all inhabitants. The frequency of leaching depends on the density of fish landing, on the ability to feed the fish, etc.

Read more:  How To Use The Filter For The Aquarium


The filter is turned off for bathing as already noted, as well as some are turned off when feeding fish for 20 minutes at maximum. If it makes noise and interferes with sleep, then find a more noiseless one or solve the problem with the option of supplying air due to which noise is the case with filters.

Rus White

A filter is a more complex system than one might think, even if we consider low-cost internal filters. In addition to mechanical filtering, any filter is at the very least, but provides biological filtering. The latter is carried out by colonies of bacteria that live on the substrate (in our case, the sponge) of the filter. The vital activity of a given colony of bacteria directly depends on the direct current of water, which brings nutrients to the microorganisms. If the filter is stopped, this colony starts to lack organic matter and oxygen and gradually dies. Moreover, this process occurs very quickly, over forty minutes. After the bacteria die, others, adapted to life in stagnant water, take their place. And then the most unpleasant thing happens – the inclusion of the filter. After its inclusion, all this fraternity falls into the water column. Predict what can happen after that, hardly anyone would agree

And how many hours a day should a filter-compressor work in an aquarium?


and I bought myself a time switch and set the program-hour work-hour rest during the day. At night, half an hour working, half an hour resting. For a day I was following the oxygen content in the aquarium and was able to pick up such a regime. Look, if the fish are just beginning (Watch carefully! DO NOT allow oxygen starvation!) To move closer to the surface (but not to eat or for some other obvious reason), then turn on aeration. Constantly keep the compressor turned ON-NOT! it’s a constant vibration, and it is very harmful! A 24-hour compressor can only be turned on in one case — if the filter is external, that is, the vibration is not transmitted to the aquarium. It is recommended to install a non-return valve even before a conventional sprayer to reduce noise.
This heater with a thermostat should be turned on all the time, but the compressor only as needed! Ideally, you should NOT have any equipment at all in an aquarium!
It is better not to overpower the aquarium and find the right balance between the number of plants and fish, as well as observe the length of the daylight hours.

Elena Gabrielyan

The filter with the aerator should work continuously without shutting down (24 hours a day) and switch off only during the flushing time. It is also necessary to take into account the starting time of the equipment – constant switching on – turning off quickly leads to the fact that the equipment will burn.

how to install a filter in an aquarium (how to install the filter in an aquarium)

In the aquarium, the pump with the filter should work forever. Now the aquarium is in preparation. No fish yet!


equipment in the aquarium should work constantly. the more you are new to this business and you still do not fully understand the processes in aquas taking place.
if the aquarium is small (up to 100 liters) it is possible to use an internal filter with aeration … if more than 100 liters – buy an external filter, but you also need an air compressor for it
if you have any questions, visit the "Aquarium Home" aquarium community here will always help and advise


Always and filter and compressor. You will turn off the air at night, the fish may suffocate (well, it depends on how many inhabitants live in aquas).
And the filter should work even if there are no fish in aquas. And then the water can stagnate and go nafig.

Elena Gabrielyan

Even when preparing the aquarium, if there are no fish yet, filtration and aeration of the aquarium should be carried out continuously. The working filter settles beneficial bacteria, which creates an environment in the aquarium, and establishes a biological balance, colonies live on the filter only due to the influx of water and air, without them the colony will die and instead of purifying the water, will spoil it, and aeration should be only because at night the fish, the plants will consume large amounts of oxygen, and the plants also release carbon dioxide into the aquarium, which without aeration will be dangerous for the fish. Get a 2 in 1 pump, aeration and filtration at the same time.


Everything can be turned off if it interferes, except for the filter. Unwanted bacteria can develop in the anaerobic environment, poison all the fish every other day. And aerobic oxidants will die. Light ideally 12:12. Aeration without strong overpopulation is not needed at all if the filter is working!

Olga Taranina

A filter pump will be needed when you run the fish in an aquarium – then it should work around the clock! Especially, it will be needed at night, when oxygen will be consumed not only by fish, but also by plants.

Internal filter

How many hours a day should the internal filter in the aquarium work?

Prince of Wales

filter and internal and external should work around the clock. Air should be supplied at least at night (when there is no photosynthesis)

Let us dwell on the filter. There is a porous material in the filter – sponge / ceramics / synthetic winterizer, etc. It is inhabited by bacteria that perform biofiltration. Without them, the filter in the aquarium is practically useless. Never wash fillers in hot water. You will kill the entire microflora in the filter. From this in the aquarium will increase the nitrite and fish can be fine ottratsya.

A small filter should be washed every 7-10 days. Large filters can "digest" the incoming organics completely, if they have a significant volume (20% of the volume of the aquarium) and do not get clogged (the so-called stationary mode), such filters do not need to be washed at all.