My parachromis freddy hasnt eaten in days now. While others down bloodworms, night crawlers and pellets like little piglets, he doesnt seem to care. He has a white, film? sort of buildup on his forehead now, which worries me. Ive had him since he was 2 inches and now is pushing 10 and care about him deeply. Ive been changing water and keeping the temps raised but should i try medication? What type do you suggest? What is the best bang for the buck medication wise?