yea that would be ich then. I've had great success with just raising the temps and adding some ich treatment or salt. I always maintained the treatment for a long time though to make sure i wiped it out, it's a horrible problem and can come back if you didn't kill it all off.
i just added the heater and my buddy came to my house with the treatment stuff and well... poured a capful in .works quite fast though the spots on them are gone =)