Exactly the kind of information I was looking for. Thanks! Now, I've also decided to make this my "plan B", making talking to my uncle (a vet) about writing a prescription for CP my "plan A". I remember seeing in one of these threads that there was a guy, a pharmacist I guess, who would fill the prescriptions and ship. Anybody know if that is still the case? Also, as this is a new tank, I plan to do back-to-back-to-back quarantines. If I get the CP, can I use the same setup back-to-back or do I need to sterilize everything before the next quarantine? The tank is easy as I plan to get 2 Sterilite containers anyway. The number 1 problem is the sponge filter and number 2 is the pump (these problems also apply to switching to a sterile tank after 2 weeks of copper treatment). My understanding is that after sterilizing, you need to allow 3 days to dry to allow evaporation of bleach or whatever you are sanitizing with. I can't kill the bacteria in my filter right before I add fish to my QT or eliminate my filter in the middle of quarantine. Is there a way to do without having 2 of everything and rotating 2 sponge filters through my sump all the time?