Okay so my regal got over it's ich seemingly fine, it was there then gone, then it came back but very slightly. All the time she never quit eating. Now there is no visible ich but she hides constantly and never comes out or swims around and when she does, which is only during feeding, she eats very little if any at all. And her color is faded extremely bad. She's almost transparent looking from some angles. did a 25% water change yesterday which didn't seem to help. all other fish(2 clowns, 2 chromis, 1 blenny) and crabs and snail and zoas are doing great and eating. any suggestions for the tang?