another reactor in series or do you split the airline between two?
Another reactor. Off another 2217. One for each side - it's a 6 foot tank.
So yeah. Splitting the line. My problem was getting the CO2 ramped up fast enough but then being too high by mid-day. (Almost gassed the Fire eel yesterday!)
Right now running 2-3 bps @ 19PSI into each reactor.
Didn't wanna jack your thread.. But your dispersion might be better with an additional way of introducing CO2. I had problems with my 90 too.