I already have some anti fungus & fin rot treatment from interpet so i'll try that next. I don't think it'll work though, i came home and found another 2 guppies dead and the other platy.
The platy had red around his gills and the top of his head.
My siamese fighter is about to croak too, he has a green/brown stain on top of his head.
That leaves me with 1 guppy, a yellow molly and a black molly and all of them are just lying on the bottom of the tank and not moving!!!