Justin, Bill's right. This stuff is a hobby killer, if not treated rapidly and agressively. I've been fighting a losing battle for almost a year near on my wife's 60 cube tank. I scrubbed mulitple times a week for over 7 months with no luck and no decrease in bryopsis.

Personally, I've had some success with elevated Mg levels, but I'm still contemplating tearing the whole thing down and starting over.