I'm planning on setting up a 30 gal qt tank for the first time. I'm going to fill it with water from my DT that I know has ich in it. I'm going to be getting a tang so I know it will get ich while in the qt. I'm wanting to have meds available to treat it if it gets bad. What works best? I'm wanting to keep it in qt so i can give meds if needed while it builds it's immune system to fight off the ich naturally once in my DT. I'm also wanting to get a fox face or orange butterfly. Are they hardier vs ich? If they are, I'd like to put them straight in my DT.