@fr499y glad you said that, the wife loves as she calls them the wavy ones, so I bought a hammer and a torch. Both went into the tank both looked great for about two months and then suddenly both looked terrible. Tried everything I could think of even to repositioning but no avail. Read about brown jelly disease but that wasn't evident. I knew they could sting if too close to other corals so made sure they were well apart, the lighting was good. Spoke to a few others and the LFS and it was put down to they just weren't happy in the tank.