I have 2 green and red blastomussa corals, which have been doing well until 2 days ago. They have not opened fully and have been retracted. I tried to move them to different location but no improvement. Zooxanthelles are still present. I'm not if the inverts are bothering them or something else in the water. Water is good. I have 2 175W MH and 6 Actinic VHO 110W, 100G tank. Any suggestion what to do or expect to see?
I also bought a blue hippo tang, 3 in, who has been hiding in a crevice and has not come out. Or at least I have not seen it. I think my yellow tang is chasing it. What do I do? Thanks