Getting true phosphate level

kiwis · Dec 31, 2020

I'm winning a long battle against GHA.

I think my issue is high phosphate. I've been using Phosphate RX to remove it which has turned the tide.

My question and issue is, when I test phosphates I get a near 0 reading. I believe because the GHA is using the Phosphate up.

How can I test what my Phosphate would be before algae consumes it?

Wolf89 · Dec 31, 2020

You can't. You just have to hope the end is near. Your water may actually have no phosphate. It may be the rock having had the phosphate bind to it and now it's releasing it.