I just moved my little O into a 30 gallon since hes been fighting with the other fish in my bigger tank. in the process though he got really scratched up and is missing a couple scales. I have a container of aquarium salt that says 1tbs for every 5 gallons but it also only says its to treat disease. Would this be an ocassion that it would be a good idea to use it or should I jsut crank up the heat?