coralsclose

My corals seem to close up in the evening, morning and at night. They don't just close up normally but completely. A torch will show skeleton when closed. The corals seem to close for about one minute and then try to open again. Same goes for at night because corals don't close completely at...

7.5 gallon with 1 gallon fuge over 8 months old. About 20 lbs live rock. Bare bottom . Tank inhabitants include 1 O. clownfish 2 acan colonies (about 10 heads) two hammer frags (2 heads) assorted zoas. I plumbed a filter loop using a power head and an inline water filter housing. Allowed to...