BIOLOGICAL FILTERS
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.
BIO BALLS
Bio Balls are used for biological filtration. The main advantage of bio balls over other biological media is that the surfaces are impossible to clog up (when used with a pre-filter). The reason is simple: the gabs of space within a bio ball is large and anything that can clog it up would already have been filtered by the pre-filter (such as filter wool, sponge etc). This is the reason why water filtration should always pass through mechanical filtration (pre-filter) before biological filtration.

uPVC solvent weld Female adaptor - BSP Dia25mm x INT Dia32mm
Pentax CM32-200C
Clamp saddle 90 x 32
Franklin SS 675/15
Lorentz PS2 1800 CSJ 3-18 solar borehole pump
32mm X 25mm Elbow 90° Female Thread
Lorentz PS2-1800 C-SJ12-4 solar borehole pump 


