Co2

[ruan99]

How much propane will be needed weekly to maintain 1200ppm?

Titan burner
12'x20' room sealed
8k watts de

Filling the room is easy, having a hard time figuring out how much co2 the trees will eat.

 

[Mikell]

Too many variables (substrate, feed EC, strain, crop density) but you'll get roughly 2-4 weeks from a BBQ bottle.