Originally Posted by stinkyattic
The boost system is very clever but expensive to operate, as the refills are pricey, and you cannot regulate the production level.
What you describe would be best served by a tank injection system with the output hose split off into a Y and run to each chamber and inserted into the back of an oscillating fan.
I paid something like $200 for my whole CO2 tank system- regulator, timer, tubing, fittings, tank purchase, and first fill. Refills are $20. One fill lasts me one full crop, or more in a 2k chamber.