It seems most of you are talking about QTing everything that goes into a fish only system but what about those with reef tanks?
I find it hard to beleive that people QT every coral or frag they add to their tank as that would require a second ank with high water quality and good lights, not to mention addtional stress on the coral for acclimating to 2 set of lights instead of 1. I dip all my corals and frags in CoralRX, does tha kill ich?
In all honesty I dont QT anything. I do my best to maintain a healthy system and good quality water. The only fish I have lost in 5 years to ich was a gold rim tang and I dont think QT would have helped.