Stoneyj33
Senior Member
I think you may not have enough nutrients available in the water column, maybe from over doing it on gfo or carbon dosing, maybe a newer tank. Corals can recess for a few reasons but when I notice lps corals retract from the outside in its usually food source or alk. 9.8 isn't to high. So I'm going to assume light or nutrients in the tank are low.
