I have a small sun coral in my reef aquarium that has been there for 2 or 3 months. I was told when I purchased it that it needed to be target fed. The person at the store was using "Fuel" (aquavitro) as a "teaser" then feeding with a combination of meaty and non-meaty stuff after the polyps opened, which she said should be about 1/2 hour later. I already had MicroVert (Kent Marine) and PhytoPlan (Two Little Fishies), and I bought the Fuel with the coral. I have been using the Fuel first and then mixing the other two and feeding 20 - 30 minutes later. However, it didn't seem to be doing very well, so I started investigating more and discovered that I had never seen any of the polyps open. I was unaware of what they should look like open - not good, I know. I should have investigated more either before or when I purchased the coral. I've tried feeding at night with only "moonlight" LEDs, as I've heard they tend to be nocturnal, but that has made no difference. My other concern is that it was all a fairly uniform peachy pink-orange color when I bought it and it mostly still is, but it also has white spots on it, and the number of the spots is increasing. I have also seen snails on it more recently than when I first got it, including snails down in the tops of the closed polyps. I think there may be algae growing in some of the polyps that is attracting the snails. Any ideas on what the white spots are, and what to do at this point to get the polyps to open up and eat? By the way, the tank has no fish, but it does have other filter feeders in the form of white calcareous tube worms. These are in the same general area as the sun coral, and I usually give them a squirt of the same food when I feed the sun coral, so there should be enough for everybody. I'll try to get a picture up later this evening.