Hello, I have two Green Terrors that I think have Hexamita. I have treated them with Metronidazole and they seemed to get better but then seemed to go back to having white, stringy poo. Also, they were both looking pale. I found a good thread on here talking about treating Hex with an Epsom salt solution, so I've been trying that. My male has had a great comeback. He is eating the treated food well and his color is back. The female however is eating little of the food and not looking so great. My worry is that the Hex could have spread to the other fish in the tank, though they look and act fine. So, my question is, can Hex spread how easily does it do so?