I have a 125 gallon fowlr tank that only had 2 clowns and a yellow tang. I had not bought a fish in over 2 years (the yellow tang). I learned my lesson with the yellow tang as he got ich. I recently bought a red lined wrasse, a blue hippo tang and a one spot foxface. I was told that wrasse's really don't need quarantined as they are so hardy (which I've been told is wrong) but I put the wrasse in my dt without quarantine. I did quarantine the blue hippo tang and the foxface. I received the fish on Tuesday. On Thursday the hippo tang died. But the foxface was doing grest until Saturday (yesterday) he's not swimming much he still eats when I feed him but not as aggressively. So now I'm worried that the hippo tang have him something. Anyone have any advice. The qt is 10 gallons. Sg 1.024. Nitrites, nitrates, amonia 0, 76 degrees. A few pieces of pvc for hiding. This will be the last time I ever qt fish together. This is my first attempt at qt new arrivals. Please help, any advice would be greatly appreciated.