My local shop told me to add salt to my tank to cure Dropsy. So I purchased some API Aquarium Salt in hopes it will cure the dropsy in my Betta. Dropsy is not in it's advanced stages there is no pointy gills, just his side is swollen up so far. He is eating but does rest a lot on the bottom. Do you guys know if this Salt is really good or going to do anything? The shop didn't have anything else for me to buy.