Bio Rocks - 750ml

Natural filter rock for saltwater aquariums. Has a very porous surface that is ideal for the colonization of bacteria. Supports the breakdown of nitrite and nitrate, stabilizes the biological balance. Can be used permanently in all types of filter systems. The stones should be cleaned briefly with lukewarm water 2-3 times a year.

Grain size 8-16mm 1 can is sufficient for approx. 500l of aquarium water

Content: 750ml / 550g