Does my new clown have ICH?

[dpsa98]

I just purchased a new percula clownfish last night and this morning I noticed little white dots all over his body. Im not sure if it's ich or not. He looked fine at my LFS but this morning he has these white dots. I would post a pic now but I am already late, I will try and post this afternoon. What are the signs I should be looking for and if it is ich will the LFS take him back or do I need to give him meds (what type) and will it hurt anything else in my tank? I only have corals , snails and a cleaner shrimp no other fish just the clown. I will check back at luch for any help you have posted.

Thank You,
Dave