you need to concentrate on the basics of growing weed and not on ghetto co2 jugs...It has to be above 85(88 ideal) degrees for co2 to be effective.
the biggest factor here, has not even been mentioned.

What type of system/grow are you doing? It was nice of britewire to look things up for you, but with your inexperience, you are asking the wrong question's.

If you know you are growing with cfl's...just say so...then folks around here can help you. But, I think you are putting the cart before the horse.

Make a solid plan before you germ those good genetics and waste them.

you DO NOT need co2 until you have harvested a decent yielding plant and have developed a clue as to what you are doing. Hope you take this to heart, lw
latewood Reviewed by latewood on . Fluoro Yield List I've got WW and NL fem seeds coming and I'm going to start five in a 5x2 room and want to know what sort of yield to expect. Just post your total lumens, how many plants, and yield. Any sort of info on the strains I picked would be helpful too, I'm a first timer but i've spent a month reading the various grow guides on the webnets. I realize that fluoro isnt ideal but given my budget/heat/electricity restricitions its my best bet thanks. Rating: 5