So I am thinking my male clown has cotton mouth. Has had it for nearly 2 weeks. Treated with pima fix and it went away twice after 4 days. It's been 4 days on the third treatment and it's still there. Gonna finish out this treatment and do the water change. He doesn't have clamped fins and isn't gasping for air and other than the white growth on his mouth seems perfectly happy and normal. My question is, is there a scrub I can use or is it OK to peel the fungus off? Would that cause more harm than good? I've seen online that it's ok but it still seems like that could cause issues to me. Thoughts?