Cryptocaryon? Do i intervene?

[h0ra]

Recently introduced some fish that were supposed to be quarantined by where i got them. Also had trouble with the UV. Then i noticed some white spots on the blue tang, as you can see in the short video. Any opinions? I have access to a vet(not a fish one) and his equipment, should we try and do a scrape? Are the risks worth it? Any other opinions?

 

[mcarroll]

It' only a glimpse on the video so can't be too sure, but that looks more like sand or something to me.