I would check your RO/DI filters and find your source before treating it. I've just had too much bad experience with losing too much good bacteria with the bad. Fix your filters and do several water changes. I'd also try underfeeding a bit for a couple days as well.
Several people on here a few threads back tried leaving their lights off for a couple of days.
Anyway, sorry I didn't answer what you asked. I didn't know the answer to the question anyway, but figured I'd try to help in another way.