One of my Yellow Guppies seems to be ill. what i see at the bottom of his rear big fins is clumping at the bottom which is orange, almost redish. i checked your articles on diseases and the only thing that comes close to what i see is that the guppy has Bacterial, Hemmohragic, Septicemia. i do have paraguard and kanaplex. could i use these. right now my filter has a sponge, matrix carbon and purigen. would i need to remove the carbon and pur to medicate. as well as during medication, should i add stabilit as well?