Filters and Accessories

Tetra - Technology - Filters and Accessories

Without a filter, most aquariums simply don't run smoothly. In this category, you can buy everything you need for trouble-free operation. Filters such as the EX plus can create a current similar to that of a natural river. Many freshwater fish benefit from a natural flow environment. Over the course of evolution, they have become used to it and need this extra movement for a healthy life. Sometimes, however, there's simply no room for an external filter and a cabinet. The solution: the Tetra IN plus internal filters or the Tetra FilterJet can be placed inside the aquarium. An internal filter like this is particularly recommended for aquariums between 50 and 150 liters or to support an external filter. But a filter can only ever be as good as its individual components. The quality and the right combination of filter media are crucial. To establish and maintain a balanced water chemistry, mechanical cleaning of the water with filter fleece, sponges or filter rings has to be complemented by biological filtration and, in some cases, chemical filtration. Tetra's biological filter materials can be used universally in most filters. Thanks to their large surface area, they offer nitrifying bacteria an ideal surface to colonize. This way, ammonia, nitrate and nitrite are converted and rendered harmless by biological processes.

Highly activated carbon filter media can bind chemical substances such as chlorine or chloramine and filter them out of the water. Heavy metal ions such as cadmium, lead or copper, which can be present even in low concentrations, and even medication residues that would otherwise be potentially dangerous for fish are also bound by activated carbon. Activated carbon media are highly effective but non-selective. That's why these media should always be used with care and not permanently, since vital trace elements such as magnesium or iron, as well as nutrients, are also filtered out of the water, which can lead to an imbalance in the medium term.