Help !! Dommino not doing well

[Captainhemo]

This is turning into a bigger problem than i origtinally thought
I looks as if I've got a parasite problem ( 1st time) . There has been some small white spots apperaring on the glass over the past couple days and now a dustlike covering over the fish ( which are acting strange still btw)
Upon looking clser at these white specs on the glass, they appear to be small parasites with approx 6 legs apriece.

Can anyone reccomend a decent parsite tratment for a reef tank ? I dont think I can just remove the fish and treat them as it appears to be nthe glass as well ?

I guess I know tyhe source fo my fiosh's strange behaviour, now I need to know what to do to help them