Platy Parasite?
Thanks. I think it was Ich after all. We lost one of the female platies 2 nights ago. The morning after I sent the email to you, the 2nd female ended up covered with spots. Another day went by and the 1st female’s spots started to disappear, and the 2nd had less, so I thought the treatment was working. I started adding additional CopperSafe with water changes to make sure I wasn’t diluting it too much. Unfortunately the next afternoon female #2 started to float vertically (tail up) and so I removed her to a new container immediately with fresh water (conditioned and ready for future water changes) hoping she would perk up. Unfortunately she was gone in about 6 hours.
