Aqua Medic Zeolith 10-25mm 1 L box (900g) (13001)

For use in salt and freshwater aquaria and ponds

Zeolite rock is a natural mineral rock with a large, reactive surface. This acts like an ion exchanger. The absorption of ammonium prevents the rise of nitrate in the water. The porous surface of zeolite rock makes it ideal as a biological filter material.
Depending on the amount of water, we recommend using it in our multi reactor S, M or L.