While my tank is fallow for the next month and a half, I think it would be a good idea for me to QT the next inhabitants well before introduction into the main DT after the fallow period ends to avoid another catastrophe. I've read that a QT tank should not have rock or sand since it will be treated with copper which leaves me wondering how the nitrogen cycle is tanking place especially since you can't mix copper with Prime. Am I going to have to perform daily water changes to keep the ammonia at a non-lethal level or how exactly does this work??