My new guppy (in isolation tank) has a patch of white between her body and tail. One of the other guppies has a ragged tail. I assume the patch is a fungus as it is white. In the white area, her scales really stand out. One of the others has a very small patch on top of his back.
I treated with Fungus Eliminator, but now am wondering if I should have used melafix. I have 2 juvenile mollies in the tank as well. Should I use the melafix, and if I do, do I have to change all the water in the tank to remove the Fungus Eliminator?
