I wanted to try heat & salt alone since I've been medicating and deworming them so much for the last 6 months. Do you have experience identifying hex under a microscope? I have been looking and have not seen evidence, but I am not good at identifying things yet. I could try to take some videos and post them.
I now think the red turq may have had a bacterial issue since she declined quickly when I upped the heat, although that could have been a coincidence.