Help spots forming on fish.

[George]

I would get all the fish out to a QT tank to observe and treat them. Without a microscope, you can't 100% identify the disease on your fish. But scratching on rocks and white dots certainly indicate there are some kind of parasites. Most likely marine ich, but a couple other parasites also cause similar symptoms.
I am very skeptical of any marine ich treatments that label reef safe. Polyp lab medic is basically Metronidazole and Peroxide acids.
Metronidazole is an antibiotics. Although there are scientific researches show that hydrogen peroxide can kill some parasites, but marine ich is not listed in the paper.