Any advice? I came today and found him upside down on the bottom of the QT. He's been in QT for 3 weeks with no issues. Treated Prazi (2 rounds) and CP (currently @ 40mg/gal). He's been eating well until the yesterday. He's been extremely reclusive the entire time, hiding in a PVC anytime I come in the room, but when peeking around the corner I've seen him swimming around the tank. QT tank has also been holding a yellow wrasse who still looks fine.
I just moved him to my other QT in case there was ammonia or something else in the water.
I just moved him to my other QT in case there was ammonia or something else in the water.
I'm wondering if he got himself wedged in-between your heater and the glass (or something), and damaged himself trying to get out. I lost a Hippo Tang in QT to that exact same scenario one time.

