Dendro

Nice dendro, I wish mine would stay open. Stupid thing stays open all night then closes when lights come on. It does open somewhat when I feed the tank but never fully. Did you have to train yours?

I didn't have to train it.the guy I got it off did have it in a fully shaded area.you could try that if thats an option.

Dendro stay open all day. I have a few colonies from different sources and all of them remain open. Not to be confused with sun coral wich stay closed all day.

I thought sun coral was a type of dendro

..Suns are Tubastrea. A little bit different.