Duncan won't open


New member
I bought a duncan the 4 days ago, and it opened up almost immediately. The next couple of days there was full polyp extension, and I fed the coral 2x a day. When I last looked at the tank last night, they were open while the lights were off, but all day today they have been completely withdrawn. Should I not start to worry since it has only been one day? What can I do?

I cannot think of any reason for the withdrawal except I did minor maintenence today... (but didn't change water or anything or touch the coral)

Any ideas?


New member
Could be stuffing too much food. LPSs don't eat that quick. Try stop feeding a few days and see.

What kind of light and flow it gets?