Another idea could be to place the powerheads next to each other in the center and run a single CO2 line in and place a T-connector with 3 or 4 inch CO2 tubes going to the powerheads. And have the PVC going out from the powerheads to the sides of the tank.
__________________
5.5G Crypt tank, 10W CF Screw-in. No filter, and air wand for circulation
26G Medium Planted Community - 65W CF Lighting - Emperor 280 Bio-Wheel
55G Aggressive Community - Filstar XP3
75G Heavily Planted - Pressurized CO2, 520W Lighting, Filstar XP3 with spraybar
29G Planted - 130W Lighting, Filstar XP2 with spraybar
4 10G Tanks - Various setups |