I bought a Coral Beauty today. I drip acclimated for 3+ hours and added it to my QT tank. An hour later, I checked on him, and he was swimming back and forth across the front of the tank, in the middle of the water column - seemingly fine. An hour after that, I check on him, and he was dead on the bottom. I'm clueless.
10 gallon, bare QT tank with cave ornament
PETCO brand powerhead aimed at water surface
I added API Stress Coat to the tank before adding the fish. I don't think the Nitrate level could be enough to kill it, but I could be wrong on that with it being a new, stressed fish. The trate level, stress and possibly conditions at the LFS
are all I can think of. This is my first death, so I'm a little bummed