Controlling phosphate

adamsfour · 2026-09-25T20:03:09-0400

Looking for recommendations. Over the last 3 months I have been trying to control my Phosphate and Nitrate. I stood up a sulfur reactor and I know can control my nitrate. For phosphate I am running a GFO reactor. It working too good and I can’t maintain any meaningful phosphate. Any recommendations on how to maintain some phosphate.

56longroof · 2026-09-25T20:09:02-0400

Feed Reef Roids

adamsfour · 2026-09-25T20:10:13-0400

I do. I guess I could feed more if it will help.

56longroof · 2026-09-25T20:11:08-0400

adamsfour said:
I do. I guess I could feed more if it will help.

You could cut the amount of gfo you use down also.

adamsfour · 2026-09-25T20:14:33-0400

I agree and that’s what I plan on doing.

EnterName · 2026-09-25T20:28:25-0400

I wouldn't overfeed. By feeding stuff you are adding nitrogen and organics as well which you might not want. For a controlled addition of phosphate only, use a DIY solution.