Hi, I will build a room for flowering and a room for mothers. The rooms are side by side and are sealed. I need to circulate the air between the rooms for the CO2 and for scrubbing the air with a charcoal filter. Both rooms together have the size: 16.7 x 12.2 x 8.5 feet (1731 cubicfeet) (5.10m x 3.70m x 2.6m). Mothers room is between one third to half the the size of the flowering room. Can somebody please tell me if I need two fans between the rooms, one pulling air in the flowering and one pulling air in the mother room? Which size need the fans to be, considering that there will also be put a charcoal filter on one of them? I really don't want to oversize my fans, but I also need the operation to work properly and need the CO2 and heat distributed properly between the two rooms.