Don't raise the temp in the water... warm water will cause the fungus to spread/grow quicker. In fact, where you normally keep it (76) is what you are aiming for.. even down to 74. Pog, please refer to the two treatment links on the stickies up top to double check what you are recommending.. they were created by a vet and is pretty accurate on what medications to try if the initial salt treatments don't work.
Start with 1 tsp of AQ salt, daily 100% water changes, readding in the salt each time (make sure to dissolve the salt first).. I would say if by the 6th day it hasn't gotten better (or if it gets worse prior to then) you will want to stop with the AQ salt and start on medications- either Fungus Eliminator by Jungle, API Erythromycin, API Fungus Cure, API Triple Sulfa, OR Mardel’s Maracyn II. One of those will do the trick.. I haven't personally used any of them, but I have recommended the Maracyn many times over the last year with good results from people who have needed to use it.