I do have one question, I have had my tank, 40 gallons, for about 2 years now, the only thing I seem to have problems with is nitrates. Ammonia levels are normal and so are nitrites, as well as phosphates, but the nitrates are off the scale. No matter what I try they stay high, does anyone have any suggestions?
Even doing water changes that are 2/3's the volume o the tank doesn't have any effect.

neddih
Oregon