Hi so I have a female crowntail and I noticed a few weeks ago the start of some fin rot possibly. However, I did not treat it because at that time my tank was having some problems with the nitrite and I was trying to resolve that since it was more of an issue for her than the fin rot. Last Sunday I added in 1/8 of a teaspoon of aquarium salt just as a precaution (her tank is 2 gallons and has a filter). By last Sunday the nitrite problems were resolved and the tanks parameters were text book. I checked the parameters today and they are still textbook. I examined the fin rot and it looks like there's white where it used to be. I can't tell if this is re growth or if it's more rotting. Advice is needed. Thank you!