Uh Oh!!!!

[Aquattro]

I would say 86 is too high because of the reason I already mentioned. For a reef, accepted temps run between 77 and 82F. Fish only tend to be cooler for O2 content reasons.
Garlic is thought to cure fish of ich when fed to them. Nobody can prove it, but it works for many people, myself included. You soak their food in garlic oil and feed. Ich goes away. There is a decent article somewhere, I'll see if I can find it.
While I do that, go turn your temp down