New confession: I'm a fish murderer. I set up my quarantine tub to try and isolate my aggressive molly (Molly Hatchet) for a while. Used a seeded sponge, checked water parameters and temp, etc. I came back 45 minutes later and he was upside down at the bottom! I tried popping him back in the tank to let him shake it off, but no luck. Best I can figure is that something toxic leached out of the plastic? I've never used the tub (sterilite 8g) before, but I did clean and rinse it thoroughly beforehand. This guy, despite (or maybe because of) his bad attitude, was my favorite fish. I just wanted him to stop bullying my platies! I'm really upset and feeling guilty. RIP, Molly Hatchet, now flirting with disaster in that big fishbowl in the sky. 😓