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Filters for fish

Comparing 1 089 products in “Filters for fish” from 16 online shops. Every product shows its price, its price per kg or litre and its stock status; prices are updated daily.

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Frequently asked questions

More questions and answers

Are snails in the aquarium filter a problem?

Small snails often move into the filter and are mostly harmless, since they feed on debris. They can get into the impeller and jam it, though, so a sponge over the intake helps, and you can pick them out when cleaning the filter.

Can the aquarium filter be run on a timer?

The filter should run all the time, because its bacteria need a constant flow of water and oxygen, so it should not be switched off by a timer. Timers suit the lighting, and the air pump or CO2 only if it fits the tank's needs.

Why has my aquarium filter's flow got weaker?

Most often the sponges, intake or hoses are clogged, or dirt has built up on the impeller. Clean these spots and check that no air or snail has got into the pump, and if the flow does not recover the impeller may be worn.