QT tanks. Seriously, WTF??

[mark]

I've done the QT thing and lost fish as well. First time believe was a NH3 spike (can rise surprisingly fast) on a newly set up QT.

Last time I tried QT was for a new fish. I placed a Potters in my 20g fuge that had been set up for awhile. I isolated it from the display (thought if something did show up, would just toss the macro), added a heater, SS65, monitored ammonia and still the fish died after about 3 weeks.

Really believe in the idea of the QT, just not having much luck with them.