I have a 3 polyp duncan frag from the Trop, that never opens anymore. I bought it about a month ago, it was open for the first week, and now nothing. It doesn't look like its in bad shape, it just won't open. I have mainly SPS, and all the frags are great. I also have a decent sized goni that is always open. I don't understand what is going on with the frag. All of my parameters are in line, and all the other coral is doing great.