How To Choose A Filter For The Aquarium

Filters are very different, and there is no definite answer to which one is better. You only need to choose the filter that best suits you and your aquarium.

therefore how to choose a filter for the aquarium you decide yourself!

To begin with, it is worth noting that when choosing a filter, look for the best option, considering the size of your tank and the capabilities of the filter itself.

Pay attention to the performance of filters, their sizes, filling with filtering materials, reliability and efficiency.

All this directly affects the quality of water purification. Therefore, it is the suitable filter that will be a good helper for you to care for the aquarium.

How To Choose A Filter For The Aquarium

Types of filters


Sponge filter. Such fillers are with large pores and small, for coarse and fine cleaning, respectively. Sponges with large pores collect large and medium-sized garbage. Such a sponge becomes clogged within one month of use, after which it should be rinsed (but not more often).

Faster debris from an aquarium can be achieved with fine-pored sponges; however, already by two weeks of use, the carrying capacity of such a sponge is reduced. With time, good bacteria live on sponge filters, and such filters, in addition to mechanical cleaning, can produce biological ones.

But for optimal biological treatment, the volume of the filter element should be at least four cm3 per liter of water.


This is a natural filter, made up of pieces of zeolite clay (special mineral substance), the material of which is similar to the gravel of light gray color.

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When cleaning, Zeolite well collects and neutralizes the heavy elements in the water and excess chemicals. After a week and a half, on the pieces of zeolite clay, as, indeed, on any other filtering substrate, beneficial bacteria are collected.

Zeolite is not restored and must be replaced after a maximum of three months of use. In combination with sponge filters, zeolite gives the best result of water purification. At the same time sponges go as the first filtering element.

Activated carbon

It is the best absorbent. This is a porous filter element that collects a very wide range of organic compounds and complex chemicals.

However, activated carbon has a significant disadvantage, since such a filter also collects beneficial substances that you added to the aquarium (these are trace elements, vitamins, and medicinal substances).

Therefore, before adding useful substances to water, such a filter should be removed. The term of use of activated carbon is limited to only one month of use. After a month, it can at any time give a reverse release of filtered substances, which will adversely affect the aquarium, which it is strongly advised not to allow.


This filtering filler fine purifies water from the least mechanical impurities, but quickly clogs. Such a filler is useless to clean, because when cleaning the density of the padding polyester is deformed and the filter stops working correctly.

The service life of the filter ranges from one day to a week, while it is necessary to monitor its condition. When using the filter together with other fillers, the duration of its work can reach from half to one month.

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In other words, these are seats for beneficial bacteria, which are made of highly porous ceramic material or of porous minerals and plastic balls.

Very effective bio-fillers of highly porous ceramic balls of five to eight mm in diameter. The service life of bio-fillers reaches one year, but once every seven to ten months, half of the filler should be replaced with a new one.