I am currently treating an ich infestation. I am using a product called kick ich. I took my carbon out of my can filter and turned my skimmer off. How long can i have bot the carbon and the skimmer out of my tank for it to be safe. The kick ich has a 15 day treatment with no water changes. and suggestions? i have tryed other methods/products a couple of weeks ago and in that time frame i have lost 70% of my fish from ich

did a water change and now i am trying to save my yellow and sailfin tang with the kick ich. the carbon has been out of the can filter for about a week and a half. and suggestions would be greatly appreciated! i dont want to lose the rest of my fish form this terrible parasite!
Thanks Guys!
-Jordan