Oh boy... I hate these threads. Sorry for your misfortune. I'm no disease expert, but I've been through the ich adventure. Ich is a parasite, and there are only two ways to kill it: copper and hyposalinity. Either way, it's best to treat in a QT. You're probably ok with what you've added to your DT. I'd do a water change and put a carbon filter in the DT. Then I'd take my time setting up a QT. Anything you do to treat ick in your DT is probably going to result in everything dieing anyway. So it's best to take your time setting up the QT to ensure it's not the cause of death. If they die before you get the QT ready it's no big deal. The thing you want to avoid is killing them yourself in an attempt to treat them. To be quite honest, if you are able to save one or more fish you will be doing better than most first timers. This is a difficult disease to treat the first attempt. There is tons of info on hyposalinity, setting up QTs, and even copper on this forum if you use the search function. The best thing you can do right now is read. Get as much info as you can, take a deep breath, and start setting up a QT when you're ready.
