Ok since my last post, I am happy to report that my purple tang seems to be ich free. I don't want to jinx it, but I didn't see any white spot or signs of disease on the fish today. I did not medicate the fish, I left it in the tank. The only thing I did since my last post is feed the fish exclusively new era aegis flakes and brown marine algae with natural garlic extract and a water change. My purple tang is/was always healthy, so it's probably a coincidence that since I only fed that type of food the disease seems to be gone. Most likely he fought the ich off but I'll feed this diet for a little longer and see what happens. Hopefully the ich wont comeback. Also i didn't receive any notification that there were replies to this topic that's why I haven't updated. The tank is a 75gal mixed reef, with about 90 gal of total water volume. I have 9 fish, and none of the other fish have signs of ick.