Just an update. Having been completely unsuccessful at getting rid of the red bubbles by less drastic methods, I have begun taking out the
live rock and scrubbing the bejesus out of it while submerged in hot water. I'm doing 2-3 rocks per week so as not to completely fry all of my bacteria at once. The good news is that it is definately ridding me of the problem. The bad news is about what you would expect...it's ridding me of everything else too. Numerous feather duster casualties, bleached out rocks, etc. The rocks I started with a couple of weeks ago are actually beginning to show some color again already, so that's good. Another week or two at this pace and the tank should be bubble free again for the first time in months.