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Bottom filter for aquarium

maintenance, care, compatibility

What is a bottom filter and how does it differ from its “brothers”? Gravel is taken as a cleaning base (as an option, quartz sand can be used in combination with a nylon thread), which is scattered over grids at the bottom of the aquarium.

Thus, a hollow bottom is obtained, and water is pumped through with a pump connected to the lower cavity tube. This device was invented in the 50s; at that time, it caused a lot of controversial opinions among aquarists. Some believed that this filter most closely matches natural processes.

Water passing through the soil layer leaves all contamination. With them, in turn, saprophytic microorganisms are cracked down.

The bottom filter for the aquarium works in such a way that the dregs and other sediments go where they would be in the natural environment. But the opinions of aquarists disagree on the question of “pumping or pumping fluid from the internal cavity?”. The first bottom devices equipped with airlift pumped out water.

With this principle of operation, the dirt settled on the top layer of soil. Using pumps, the direction of fluid flow can be changed.

The only negative – pollution can cause obstruction in the internal space under the grate. That is why it is recommended to pre-clean the water using a tube on the inner filter.

The main problem associated with the use of such a device as aquarium bottom filters, is a fairly powerful stream of water, continuously passing through the soil. This phenomenon is not observed in natural conditions: there is no regular underground current in natural water bodies.

Washing the soil reduces the number of underwater plants. The fact is that nymphs or cryptocorins, for example, need an anaerobic substrate.

Washing the roots with water that is saturated with oxygen is detrimental to them.

In addition, the bottom filter is hardly suitable for aquariums with a large area. This is explained by the following: soil clogging requires a radical re-equipment of the “underwater kingdom”.

In an aquarium with a small area, cleaning is much easier. And owners of luxury “fish suites” should think about using such filters as internal and external filters.

Bottom filter for the aquarium: the pros and cons :: Bottom filter for a round aquarium :: Aquarium fish

The bottom filter for the aquarium is otherwise called “false.” It provides not only mechanical water purification, but also natural: through the soil.

However, this equipment has its advantages and disadvantages.

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False is a thin but durable plastic plate with a lot of holes drilled in it. On this perforated canvas which is laid ground.

It can be made in the form of a lattice with small meshes. On the reverse side of the plate, the pump, system of pipes for water intake, filter are strengthened.

Bottom filters are completed in different ways, but they all work according to the same principle: they drain the water out of the ground, clean it and return it to the aquarium.

The undoubted advantage of the bottom water filtration method is high-quality biological and mechanical cleaning. The advantage of this equipment is that it is almost imperceptible under the plate or grille.

This is especially true for those who seek to create a decoration of the aquarium as close as possible to the natural.
In addition, falsely allows you to maintain an optimal microclimate for fish. The advantage of this equipment is that it will provide an immaculate cleansing of the bottom, where fish waste accumulates, fodder, algae fragments.
If the aquarium is small, the power of the pump will provide a uniform flow of water. If the capacity of a solid volume, any of the bottom filters can not cope with its task, because when the output of purified water, it needs to overcome the resistance of the upper layer.

Therefore, a pure liquid can only be in the bottom of the aquarium, not reaching its top. When using the bottom filtration method, the recommended soil thickness is 5-8 cm.
Another disadvantage of these filters is that they are quite difficult to maintain. To install the bottom of the equipment in an already operating aquarium will require its complete reorganization.

The soil laid on the false, should be large enough, because the small is not able to provide the required current flow of water, which will significantly impair its filtration.
The design of some models of bottom filters assumes the presence of a small gap between the plate with the equipment installed under it and the aquarium glass. This is fraught with the risk of penetrating the smallest small fish.

Therefore, from under the plate will have to remove snails, fry, shrimp. This also complicates the care of the aquarium.
Using a bottom filter, you should know that it clogs pretty quickly and requires cleaning. Experienced aquarists solve this problem by providing a reverse flow of water using a canister filter connected in an appropriate way.

In the process of its work, the dirt begins to go out through the ground and rise to the surface of the water. This can lead to a lack of oxygen in the aquarium, so this cleaning is best done with the compressor on.

If you decide to use a bottom filter for an aquarium, then try to make it yourself. For the manufacture of the simplest aquarium bottom filter will need a glass jar with a capacity of 0.5-1 liters. Close the jar with a regular lid and make two holes in it: for the tube and for the water from the aquarium.

Another cover will be required for the partition, and filtering material is placed between the covers.

Another option for the simplest bottom filter for an aquarium that you can do yourself. The hull will require a clay bowl in which the filtering material is placed, and an ordinary funnel is placed on top of the linings.

Medium-grained quartz sand and nylon threads are taken for filtration. Aerator, as an additional device, you can buy in the store.

Bottom filters appeared in the middle of the last century and are now obsolete. However, some aquarists, especially beginners, prefer to use bottom filters.

Subject to regular cleaning of gravel and partial replacement of water in the aquarium, they will economically and effectively improve the living conditions of your fish.

A filter is a device for purifying (filtering) any medium. Accordingly, the aquarium filter is designed to clean the water in the house for fish. Like any other device, filters for aquariums are of different types.

When buying, it is important to immediately select the device that is really suitable for this aquarium.

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