ive recently.got.back into the hobby after moving. ive started my tank over with argonite. the person before me.had.the.water in bad.condition. ive never had a.nitrate problem until this time.around. its at around 60 to 80 on the color.chart. ive changed 20 gallons out of this 75 gallon tank 2 tumes. it lowered it from 160 to 60 but it rises up again. my question is do yall think the argonite builds nitrates.? nit sure.hiw to get it back to under 10.