I’ve tried QTing everything in my own for about a year and half. Lost in total about 40 fish. It’s stressful, time consuming, resource draining, and last but not least imperfect. Things still get through and then trying to QT large amounts of fish at once just amplifies the above.
Fast forward to trying to add coral to the tank… it got incredibly annoying.
I am a huge proponent for QT, but my .02, better to just have someone do it for you.
I just buy QTd fish and maintain a 15 gallon tank that is for inverts and coral only. They spend 76 days in the 15 gallon then go to the frag tank and onward to the display.
QT is great, but it is much more challenging to accomplish on your own than most people think. On top of that, most medications are in a grey area of might or might not work. Anyone treating Uronema in chromies with metro will tell ya that eradication success isn’t high.