Okay, so my largest Angle has seemingly contacted hole-in-the-head, I caught it before it got too sever. I've place my Angle in a 5gallon hospital tank with a heater and a sponge filter(no carbon in the filter) and I've dosed the tank with General Cure, I found it worked to cure my Oscar once(when I had the oscar), so why not my Anglefish. Is there any better medicine to help cure him quickly?