I am a believer in QT, I have a small tank I use for my fish, I do not have the resources nor the space to QT 100 lbs of LR. The reason I was interested in this LR was that it was coming from a tank with healthy fish, the rock was not being shipped for a day or two, it would only be out of the water for an hour or so. I think I'm minimizing the impact of introducing anything bad by knowing where the rock is from and not having it exposed and dying for a day or so. Am I asking for trouble?