Well I bought a nice piece of Sun Coral about a week ago. I have been trying to feed it every other day, with limited success. I have been using an old Betta Fish cup with a hole in the top to cover the coral with while feeding. This is to keep my other fish out, and the brine shrimp in. The polyps open a little, but nothing like I have seen in various pics. I tried once to remove the coral completely, put it in a bowl of aquarium water, and that didn't make much difference. Are these guys just shy at first when trying to coax them out? Is there something else I could try? I have been mostly feeding them at night, around 8 or when the first light goes off or the night. I am definitely committed to giving this guy the extra attention it needs. Yes, it is for the most part out in the open, under the lights. I have read mixed comments about whether or not they light the light. Plus the spot they are in is simply easier to feed them in rather then under the cave I have. I will keep working on it, anyone have any thoughts? Your success stories on these guys would be great, too! THANKS.