Hello guys! One of my mickey mouse platy's has a SERIOUS case of the ich, it is so serious I don't even know how to treat it. This is to where there are little white string like things coming out of his body/scales and half of his left fin is rotted off. I've never seen a case like this before. I even used the fizzie blue tablet things that have worked before but this time they are not effective! I put a very small amount of aquarium salt in there because I have a cory and loaches and I know they don't like it. So someone recommended me to put him in a seperate bowl with no filter, and leave him in there for a few hours with a bit of extra salt. Was that a smart idea? How else can I fix this problem?