Dymax - Volcanic Rock 1Kg

Volcanic rock is a natural biological filtration material. The rough surface area allows increase adhesion for bacteria, while ensuring the rapid decomposition of harmful substances. With its fast action of decomposition, this media is extremely effective for even large scale aquarium filtration system eg. Koi pond, marine aquarium etc. Dymax Volcanic Media is specially developed to offer optimum biological filtration for your aquarium compare to other media. Biological filtration is the action of helpful bacteria breaking down dangerous ammonia, converting it to nitrate and then converting nitrite to less toxic nitrate.