[Neon tetra disease?]

I cant tell what that is but it looks like something I had with my neons and I treated them with just aquarium salt I forget the amount used but it is on the package plus I up the temp in the by about 5 degrees in the tank it may help and may not 

[Planted Oscar tank]

I have a 125g tank with a pair of 4in oscars and was looking for some ideas of what types of plants I could put in with them