I have had two favia for about 1 1/2 weeks now. One is about 3 in wide while the other is a small frag. At first I had them at the top of my tank closer to the lights. The larger favia seemed to be fading so I moved it to the bottom. OK, at night the large one extends tentacles but I have never seen the small one to that. I try to use my target feeder with cyclopeeze and squirt it into the tentacles. I turn off my powerheads to keep the water calm. I can't tell if it eats or not. I have read and read about them but just can't find much on feeding. Anything will help. Thanks