Dry rock has been in my fishes tank for about 5 weeks now. I decided to let it cycle while clowns were in QT. Ammonia and nitrites are both 0, but nitrates are really high somewhere between 40-80ppm. I have been doing 12% water changes each week and nitrates don't seem to be moving. What is my next step? Clowns can't go back in with the nitrates this high correct?
Sent from my SM-N950U using Tapatalk