[dinor2]

I'm attaching pics but I am very interested to know why my kenya coral has these rings around the stalk! Is it because part of it is not attached to a rock yet? Also, notice in the pic how the left bottom part that is on the rock is turning a dark color? My coral has double it's size since I got it back in February but, this is new and I want to be sure it's not sick! Anyone know what is going on? Thanks for any help!

P.S. The little lr on the right side is what it was half attached to when I got it, I leaned it onto the larger lr and it's almost half attached to it now but there's that little half inch gap at the base of the stalk in between those rocks, would that cause these symptoms? The coral still opens up and seems happy...