Amin, that's a good point on the (double) potential ammonia spike. That would account for the anecdotal support for the Maracyn killing MTS and the absolute lack of explanation for their deaths.
Mine seem to be fine. I think I'll step up the dosage tomorrow and try to seal the deal on the BGA. Spent a solid 2 hours today scraping as much of the algae as possible off of the driftwood and cleaning the glass - except for the corner of the tank that contains my spawning (now free-swimming) kribs. Meaning that there is a significant amount of algae still in the tank, but that's pretty easily remedied now that the parents and fry are becoming mobile and traveling the tank in search of food.
Fingers crossed...