I bought one of these (Duncanopsammia) from the frag swap and had a few questions about it,when I first put it in my tank it was open and looking good.I had it under vho lights and then it started looking bad and not opening so I moved it to my M.H. (400 watt)and saw no change.I will post some water parm. later just looking for some ideas.I've checked the internet and there seems to be some disparity in the lighting etc.