G gsxrboy22 Active Member Mar 8, 2008 #1 if u use dry ice for c02 do u use it while the plants r sleep or how do u go about it...thanks
M metaL Active Member Mar 10, 2008 #3 plants use co2 during the photosynthesis period.. thus they need it when the lights are on or sun is out
plants use co2 during the photosynthesis period.. thus they need it when the lights are on or sun is out
