sushiray;3371091; said:
x2 . . . if you have 10ppm coming out of your tap to begin with, a 20% w/c only gets your ppm down to around 35ppm . . . to get it down to 20ppm, you'd have to do a 2/3 water change, and that's too much
if you can try changing 20% every other day for a week, you can get it down to 20ppm and then see if the tank stabilizes at that point (w/o you adding any more N03 on your own)
