All my fish currently in QT treating ich for the last 2 months. During cupramine treatment almost lost the flame angel. Transferred to new tank and it recovered and returned with the others and moved to hypo to continue treatment. Doing fine now except has a pale face/head and twitches while swimming. Eating well and very active. Everyone else is fine. No change the past few weeks while in hypo. I'm thinking maybe HLLE? Started dosing vits with no change. Gets variety diet. ANy ideas and how to treat?