I set up my tank with about 35 lbs of live rock. it was fine for a few days but then it seemed like the little hand like creatures went away. they are back now and look very neat. but i have noticed little snail looking things all over my tank. none are just bigger than a pin head. and now the 6 blue damsels i had to help cycle the tank are down to 2, and they are looking pitiful. they have been in there about 2 weeks. thanks for the help.