one of my mollies has a white spot on the top of her head i now it is not ich it is to big like 1/8 inch water is at 0 ammonia 0 nitrite and 10 nitrate. Ive add a little salt to see if that helps. I know she is pregnant and do any day. i also cant take a pic because she is so light you cant see it. does anyone know what it is and how to treat it.