ICH UGH I am so bummed...

I have a beautiful blue tang and singapore angel both are COVERED in ICH I treated them with quick ich, turned up the temp, dropped the salinity gradually to .019 was at .024, took carbon out of filter, did a 15% water change tonight, started feeding with garlic. Picked up a garlic clove cut a chunk off one of the cloves and mashed it and soaked some mysis's and dried food in it for about 10-20 mins. They devoured it. I am so worried about the rest of my fish getting this and losing the ones that have it bad now. so far knock on wood they are eating swimming, just covered in the nasty lil ich things. UHG I hate this helpless feeling of not being able to do anything. IS there ANYTHING else I can do to help this clear up so I don't loose anymore fish? I know there is TONS of information and I have read TONS and TONS. Will my UV starilizer make the meds not work? should I unplug it or just leave it. I am picking up some seachem garlic extract tomorrow and some vitamines thanks to someone here And I am picking up a cleaner shrimp from someone here as well tomorrow. Anyother advice so I don't loose my babies would be great, as silly as this my sound I'm panicking and can't sleep over this. UGH and ppl say they are just fish???? please