Please spare the lecturing about a quarantine tank, I already realize the error of my ways. I am new to the hobby. I have three tangs: yellow belly hippo, yellow, and a kole. They have all come down with some nasty ich and are in my reef tank. I also have a clown in there with no visible symptoms. This has been going on for about 4 days now and has gotten worse. They are all still eating nicely and I've been supplementing with garlic but the infestation looks horrible. How do I quickly set up a hospital tank. I cant really allow time for a biofilter to build up before I use it. Can I just use a simple hot carbon filter? I think I'm gonna run out and get a 20 gallon tank but filtration is my main concern right now. I feel awful. Please someone link me up or give me your knowledge please.