Raising the temp will work for the ich, which is what those white dots are. Raise it 1 degree every 6-8 hours, until it gets to 86*, and leave it there for 10 days.
For the fin rot, as long as there is no white fungus on it, you can just keep the water super clean and it should heal up on it's own. Fin rot is usually black around the edges. By clean waterI mean 2-3 pwc
's a week instead of one.
Is your tank cycled?