Coral growth issues..

[Aquattro]

Originally Posted by reefwars

At 0.25 for Po4 , that's part of your issue

Probably most of the issue. Temp is good, other parameters good. RO vs RO/DI is not a factor. NO3 reading 0ppm is likely not an issue, there will be some, just utilized immediately and not detectable. I never had a reading on NO3 and coral growth was crazy.

I'd aim to lower PO4 as a first action.