Ok so about 5 months ago i put a whisker coral in my biocube 32, with all the other corals. He did well for about a week or so then closed up, He never opened again. All other corals (LPS) only are doing great growing etc. I don't dose really i just change the 15% of the water every week or two at the most. I have 2 OC clowns a shrimp goby, and clean up crew so i know bioload isn't an issue. I will post water parameters tonight when i test them. I have a new whisker coral in there just 3 days old and He is doing the same thing just wont open. So besides water what else could be irritating this whisker coral.