I haven't provided parameters because it doesn't seem to be the issue here anyway.. my other fish are healthy and active..
I have two mollies which contracted a fungus. I isolated the two in a 5 gallon quarantine tank. It cleared up apparently in both mollies: this was about 3 weeks ago.
About a week and a half ago, I noticed one of the previously afflicted mollies seemed to have had a recurrence of the fungus, so back into quarantine she went. I medicated per instructions and at the end of the second medication she was no better. I changed half the water and switched to an ich medication.
The ich seems to be s slowly clearing up: the white little pistules are now gone. She still has a cloudy eye yet she appears happy: comes to the surface and eats, swims around. I do not think she is at the point of being 'taken out'.
Should I medicate again for ich in an attempt to clear the eye up? Should I just keep her quarantined until she dies of old age? Can she be sent back to the main tank?
If a fungus and/or ich will not clear up, when does one euthanize a fish?
Which leads to a side question: has anyone ever seen a fungus or ich that will NOT clear up no matter what is done?