120 gallon tank all my parameters areally normal and good. All my coral is good. I started with a picasso clown, 3 cromis and 2 fire fish. Lost 2 cromis and the clown. Than I got a blue dot jaw fish and carpenter wrasse lost both. Than I got 3 ora Blackice, Picasso and platinum. Lost the platinum. I've done extensive searching after each case and haven't seen a single thing except 1 cromis was stuck to my mp40. The rest vanished. All my rock has been moved from a 4 year old tank to my now 1 year old tank. I never got new rock or sand. Need anything else?