The Bio filters contain living bacteria that capture and biologically degrade nitrogen in ponds. Bio filtration is required to break down ammonia into nitrite and nitrite into nitrate.
Biological filtration is the action of bacteria in the tank breaking down dangerous ammonia, converting them to nitrites, and then the nitrites to the less toxic nitrates.
Nitrates can be harmful to many invertebrates in high concentrations.
What's in the box
Bio Filter 10 Litres (Requires 240 balls not incl) - Aqua Max
