Yes. 30 days with copper. You do not have sick fish, that's another mess. Yes, you transfer fish when 30 days is done and observe. I have cut corners here without an issue and added fish directly to display tank. HOWEVER, I MAKE 100% SURE THAT MY COPPER LEVELS NEVER DROPPED AND CHECK DAILY FOR CORRECT COPPER LEVELS. I would tell most people to treat with copper and observe another 30 days just in case. 2 weeks however should be fine but officially it's 30 days.When you say stay with medicine for 30 days. I assume you mean the copper in the tank at proper levels for 30 days, correct? If I was transferring to another 10 g tank I would add no medicine and just observe for 2 weeks, right?


