I recent had an out brake of ich in my main tank (didn't qruantine two platy). I lost all my fish except my Cory who I moved and treated separately, he isn't showing signs and my silver mollie. I have been treating for over a week and now she looks pregnant. She's fat with the dark spot near her back end. She still stays near the bottom of the tank and has her fins clamped. I can't really see any white spots from the ich which was hard because she is white. Before I could see them in her tail. How can I tell when the ich is gone?