Maybe Ich?

[Slick Fork]

Hi there,

I was looking at my tank today and noticed a spot on my foxface, just 1 spot that looks like it may be ich. Checked out my clowns and the female looks like she might have one as well. Unfortunately my camera crapped out so I can't get a picture. I checked out all the sites, unfortunately the pictures that are available all seem to be of massively infected fish so it makes it tough to say "Yeah, that's it" or "Whew, I'm safe"

Just the three of them (1 foxface, 2 ocellaris clowns) in a 100 gallon display (40 gallon sump) I also have a Blenny in quarantine with about a week to go. Now I've had this tank up and running since the end of November, The last one in was the foxface and he joined the crew in the display at the end of February. Since then, the last thing I added was some LR around the beginning of may, end of april. I have never noticed Ich in the tank before so to the best of my knowledge I thought I had dodged that bullet.

So here are my questions:

1) Can ich go unnoticed or in a mild state for months? Or could my spot(s) be something else

2) I hate to cause unnecessary stress, should I wait it out for a few days to be sure (see if it spreads) or send these guys into quarantine asap?

3) If the consensus is treat now because I'm better safe than sorry, my plan of attack will be hyposalinity, how gradually should I bring the salinity down? My target will be 1.009, how long should I keep them there. Since I may be going through all this, I should probably give the blenny the hypo treatment with the other three as well or is this a bad idea.

Thanks and Cheers