I have a new outbreak of Ich after coral introductions. My striped sailfin tang and yellow tang had a few white spots. Not willing to dismantle my reef and catch these guys, I bought a cleaner shrimp and treated food with garlic along with keeping up with water chemistry. The white spots disappeard in less than a week....woowooo. 5 days later...out of nowhere my striped is COVERED in white spots and the yellow has black spots. Even my tough little damsel has white spots. I can't quarantine all of my fish....was wondering if a UV sterilizer would help??or at least help prevent this from happening again...thoughts?? If a UV would be beneficial, I'd appreciate recommendations for a 70g.