I fed mine 3 times a week, spiked with Zoecon. My water temp was a little warm (75-79) and I always fed fresh seafood like scallops, shrimp, squid and clam. The ghost shrimp at this point arent doing anything really for his development. Go to fresh seafood with a multivitiamin and supplement iodine in there somewhere. Shark Formula gelatin cubes are a good source. They make a mess, so be careful. When you feed them, look for the sides to bulge, but not too much. Your animal should almost know when to stop eating by know. What is the size and temp of your tank? This will have an effect on it also.