I bought a nice Sun Coral Colony at the lfs a couple weeks go. It wasn't open as the lights were all on, but the employee at the store said he's seen it open at night and has fed it mysis shrimp successfully. I've been trying different locations in my tank over the last two weeks. More flow, less flow, upper in tank, lower in tank. I've read they like low flow dark areas and this coral has been in a dim low flow area for about 4 days now and I still haven't gotten it to open up. One night about two of the polyps were partially opened, but that's the best it's done yet. Anybody have any suggestions of what I can try next? I'd really like to keep this coral but don't want it to starve to death cuz it won't open and can't feed. Thanks in advance for any help.