i've treated my tank three times with parasite clear. I think I have internal Parasites. My angels are still not eating or they spit food when they do. My tank is 55gs. I've tried NLS thera A which has Lots of garlic in it. They aren't interested. Idk what to do now. Oh and there was OLD carbon in my filters the first two Treatments but I removed it for the third so idk if that would have effected the treatment. I really need advice. I am leaving out of town monday for a week and I would like to know they are healthier and eating