yea, good idea about the one thread. I wasn't sure that I was going to have to treat the fish I have in my main tank, but they seem to be getting worse. My clown is scratching on the bottom, and my watchman just did for the first time today. Neither have any white spots on them, but I still am pretty sure it's ich. I know you wouldn't suggest it, but I'm going to treat them with copper because I'm going out of town and I know my mom wouldn't be able to handle doing hyposalinity. And tomorrow I'll be sure to get some more pvc pipe before I put the fish in the tank.