Ok, so there's someting I'm unclear about with respect to ich and quarentine tanks. So let's say I get a fish and it was purchased from a place with ich present, but becuase the fish wasn't unduly stressed, so the ich never appeared. However, you buy this fish put it in your qt for a month, still doesn't show the ich and you say ok, this fish is ich free and put it in your dt. Now, it has to deal with your boss fish, and gets stressed, and low and behold, the ich surfaces. You say to yourself, the entire time it was in my qt, I watched carefully and never saw any ich...So what are you supposed to do about this? Doesn't this make the qt process somewhat pointless since you can try as hard as poss to keep your DT ich free, but this circumstance could completley blow that. My final question is should you then have copper always circuating in your qt to kill any parasite present while quarantining? Would that be the only way to ensure your dt stays ich free??