I have a 10 gallon planted tank, still fairly new, but one of my platys gave birth right after I brought her home. The fry are all about .5" long now, and they are a hoot to watch.
My question is this- the male platy seems to have mouth fungus or a flexibacter/columnaris infection. I had heard that adding aquarium salt to the tank would help- is this going to be safe for the fry? If I wind up having to medicate the tank, is this going to damage the bacterial colony to the point where water parameters will suffer?
Edit: my cycle appears to be complete, water params are good, temp stable, etc. Plants are going nuts, fish all act healthy, snails growing everywhere, etc.
What would YOU do? I'm about to spend $10 or more on medicine for a $.99 fish, and am trying hard to protect his offspring. Am I nuts?

My question is this- the male platy seems to have mouth fungus or a flexibacter/columnaris infection. I had heard that adding aquarium salt to the tank would help- is this going to be safe for the fry? If I wind up having to medicate the tank, is this going to damage the bacterial colony to the point where water parameters will suffer?
Edit: my cycle appears to be complete, water params are good, temp stable, etc. Plants are going nuts, fish all act healthy, snails growing everywhere, etc.
What would YOU do? I'm about to spend $10 or more on medicine for a $.99 fish, and am trying hard to protect his offspring. Am I nuts?