What should my ideal Nitrates and Phos be? 10-20ppm and .03 respectively?Ye its probably your nutrients being way too low for the corals to survive. Imo i would start by physically removing gha and adding snails to help you get rid of them then slowly increase nitrates and phos
I can lower the amount of time my Chaeto receives light and start feeding more to get these up. I have a few urchins that are taking out the algae I have. But its not too much or overpowering IMO.