Yikes...i am somewhat new to this hobby, so I am doing the best I can. But I started a new tank (36 gallon) on the day after Christmas. All of the fish from the previous tank (10 gallon) were healthy (2 long fin tetras, 1 dwarf guarami, 1 corydora, 2 dwarf platy). Added 4 Mollys. Found out that 1 had ich. So I did my research, gradually raised the temp to 82-83 degrees and added extra salt. 2 mollys died and more outbreaks on other fish. so I lowered the temp back down to about 78-79, and am doing copper sulfate treatment (coppersafe by Mardel). Removed the carbon filter. I wasn't sure about that. everything I read said to remove carbon so not to filter out the treatment. package said to leave it in place if over 5 days old. Now the tank looks cloudy. I know it hasn't been that long, but both tetras look rotten, maybe a little fin is gone (?). What should I do? the tank hasn't cycled and I don't want to lose any more fish. How long should the treatment with copper take? should I put a new filter in?