New 73 gallon tank setup

[tang daddy]

Originally Posted by Frogger

Changing water about 10 gallons every second week on a 80 gallon system. This was more an effort to reduce phosphates that had gotten really high. Using only RO DI water newer filters. I was only lightly feeding and have a low fish bio load (5 fish). I was using a lot of GFO to help reduce phosphates. I have never registered Nitrates. It was Gregzz4 that told me the 0 nitrates is the problem.

Almost the same issue with me, no no3 and sometimes lots of po4. The colours on my sps are awesome tho so can't complain but the po4 won't go down without no3 they drag each other down....