To cut the fins you must get a damp paper towel and lay it over the fish's body (the fish will be on a paper plate or something) then gently and carefully trim. The same procedure for the peroxide excep the peroxide can only touch the infected area.
Who am I? Well I am a Junior Member of the International Betta Congress and a breeder of white HMPKs, red dragon HMPKs, black/red dragon HMPKs, metallic multi HMPKs, blue masked HMPKs, and now multi color HMs. Soon to add black HMs. I will be showing in New Breeder class in fall of 2012.