Just bump up the temp to 85-86 and it will take care of it in 7 days. If you can do daily water changes at around 50% then that will help get rid of the free floating particles and prevent it from growing again but the Ich cannot live in those temperatures and will die in a complete life cycle in 7 days so that's the easiest, least stressful way to handle Ich! I've done that for my 33 sorority and worked super well!!
RJ (H. Lifalili), Acara (EB)
Ghost, Trip (Angels)
Leopards: 2:3 Hawkeye, Cullen, Luna, Astrael, Dorian