Oh golly hope you didn't think that I mean you would want to hurt them. So sorry.

Taking the fish out and treating is awesome. I just don't think that the frogs will carry the ich. I guess if the fish get it again very soon you will find out. I just figure it might be easier to treat the tank it's self for ich by heating it up. Hope all goes well with your tank, I had ich with a betta that never seemed to be able to get rid of it for long. Made me nuts!