you are begging for root rot and all kinds of problems with 12/12 of oxygen and will have slow growthI understand that...but 12/12 wouldn't work? Would the plants get root rot from just being off for 12 hours?? I'm sure the water would have enough oxygen for the plants in that amount of time. Also what is the minimum space a plant needs in a sea of green setting for the bubbler. I was thinking about using some 2-3 in net pots 3 or 4 inches from each other. Is that enough space??