Today I woke up turned on my lights to my 2 week old 75 gal tank and found yet another 1 of my 3 damsels laying on the bottom dead. I am very confused on wy this is happening, I thought damsels were the most hardy fish and the best starter fish. Now I only have a domino damsel left. I have 20 lbs of live rock, rena canister filter, red sea turbo berlin skimmer, 48" coalife pc lighting and a undergravel jaubert filter. Why are all of my starters dying. And what should I do to prevent any future deaths?