Hello, I started this tank up 6 weeks ago, everything was fine in tank. Added in clowns and snail and both were fine for the first few weeks (added In chemicals for the cycling process to be only a day or two). Now I went to a different somewhat lfs and purchased a Valentini Puffer and a royal gramma. Puffer is fine, but the royal gramma started with a white bump on head and then white spots on fins and now on the body (picture below). I’m about 90% sure it’s ich, and most likely had it when I purchased it. I’m just wondering what some of my options are to help cure the fish, and prevent from any more spreading. Anything besides copper-aid. Thanks