hi and thanks for looking at. I moved him to a quarantine tank, its cycling so the water is cloudy. though I am carefully measuring and using prime for water changes and measuring parameters daily. he has a heater at 80, a thermometer, a sponge filter, and airstone both with valve to a gentle flow, I test the water and its cloudy but otherwise normal. I have been treating with prazipro because he's flashing and has red gills so I thought it was flukes, but its worsened over two weeks, I think ive misdiagnosed. it might be time to re evaluate.