Can the trophont phase subside/be invisible/rapidly visible? I had a few thoughts recently and that seems to be the only thing that explained them..
1. I was wondering how ich can be in a tank, but show no sign of infection...otherwise, if you saw no sign of ich for 76 days, your tank would be ich free, as it would have never infected a host. Is it correct to understand that fish can be "chronically" sick with the tomite (or trophont) phase, but show no outward sign of infection? I also read this phase is very resistant to copper...seems weird as that is the advised ich treatment!
2. I have seen ich before. However, recently I saw a fish in someone else's tank that seemed to develop ich in the evening...then the next day, was totally ich free. The entire time, it was acting normally. I dont think it was sand, and it was a fairy wrasse, who doesnt burrow in sand. He told me later he had a fish with 1 (ONE) spot that looked like ich but it went away a day later. Every time I have seen ich, it is clearly an outbreak on the fish that does not "come and go" in hours. Can ich be in the trophont stage for just a few hours like that?