Certainly not the chemical guru sort so I'm needing some help.
My tank runs high/very high phosphate. None in the water but there are lots of heavy eaters ? breeding stock and I do feed lots.
Is the phosphate I test from food alone, debris , etc and I should not be adding KH2PO4? The phosphate on testing is what the plants need?
So when I drop adding the fert, is there a practical way beyond water changing, cleaning filters, that I should look at doing?