Sounds like you have a serious problem. If the blobs are large, I would think some sort of fungus, but smaller white spots are ich. Quarantine is your best bet, but I know it can be a pain getting the fish out of the reef. I eradicated ich from my reef a couple of years ago by hyposalinity in a quarantine tank. It worked. But its work. Do you have any pics. Those would help some of the experts here figure it out.