I've always heard that BBA tends to break out when Co2 levels become inconsistent, or drop - as has happened in my 55 gallon. So, I'm taking the Tom Barr method: Increase Co2 and decrease light. Trouble is, I'm not sure if my increasing Co2 is working that well! I also beat BBA with an excess of Flourish Excel in my 29 early in that tank's lifetime, but I don't like to go that route with my 55. Anyway, that's my suggestion: Increase Co2 and decrease light. I would guess the clogged reactor had more to do with it than you think.