It is kind of a pain but I read to remove them and put them in a small buket of tank wanter and feed them in there. I do that around twice a week and really feed them alot, the rest of the time the puff up and eat the roto feast that I add for the rest of the coral. They are increadable creatures! I do like putting them in the bucket it is fun watching them..... I even have a small flashlight that I will shine into the bucket (not directly on them, that woudl be rude)
Deb