wax32
Active Member
MH is metal halide... my light. Bacteria lives in your LR and breaks down fish pee and poo(ammonia) to nitrites and then different bacteria, also in your LR, breaks it down to nitrates. You get rid of nitrates by doing water changes and by growing macro-algae in your fuge which eats the nitrates, you then prune the algae and throw it away... thereby throwing away the nitrates.