Good morning Jmullen and Welcome

to Fish Lore.
Sorry to hear that your fish are dealing with ICH. As stated above, raise your temperature to 84/85 degrees and leave it there for two weeks. Do two gravel vacuums each week to remove the spores that fall off the fish and into the substrate. Make sure your new water is the same temperature as your tank water. Warmer water requires more oxygen so an air stone should be added if you aren't currently using one. ICH may get worse before it gets better. ICH cannot reproduce in temperatures over 82 degrees so they begin to die off during these two weeks. Even if the fish appear to be free of the parasite after a few days do not reduce your temperature until after the 2 weeks is up.
The fish are rubbing on the gravel trying to remove the parasite. It's also called "flashing" or "glancing".
Here is a link on ICH you may find helpful and interesting. Please note: we no longer recommend using salt for treatment as stated in the link. Salt could do more harm than good, causing the fish to produce too much body slime stressing the fish even more.
Ich: An Old Cure for an Old Disease
I agree with the statement only medicate as a last resort. A lot of medicines can destroy your cycle causing even more problems.
Best wishes for a full speedy recovery!
Ken