dont waste your money i didnt see any real results when i used one.. im now fucking with a co2 timer reg and 20lbs tank and i see a noticable differance before i wouldnt even have that many flowers at week 3 now i have buds that are super hairy all my plants are healthy!

I know you didn't mean it that way, but small scale doesn't necessarily mean half-assed. Right now the seedlings are under a four bulb T5HO fixture and in two weeks they'll go under a 1000W MH then HPS for flowering (switchable ballast). I have a ducted, filtered exhaust system and monitor humidity, temp, Ph and all that jazz. As far as nutes I go from Grow Big to Big Bloom and finish it off with Tiger Bloom. I was just trying to think of something crafty vs. shelling out more dough for a fancy CO2 injection system.

Thanks Jackdirty you just saved me some cash,Im going to go ahead and get a tank and regulater this week .My yields are good now but theres always room for improvement......peace

__________________
Mr. Therapy Man

Ok, after further research, for my situation this is a horrible idea. To make enough CO2 to enrich an 8x8x8 space I would need 2lbs. of baking soda and 5 gallons of vinegar daily. Apparently muratic acid (HCL) works more effectively, but hydrochloric acid can also be pretty dangerous. According to my scientist pal, it would be an effective enrichment method for a small closet grow, however.

__________________
“When I was a kid I inhaled frequently. That was the point.” – Barack Obama

If you have a relatively confined room and you don't want to spend bucks then I would definitely suggest using yeast and sugar.

__________________
http://www.rollitup.org/dwc-bubblepo...woman-lst.html-Finished Wonder Woman 150 watt hps&LST.

Check this out, it says that if you spend 70 minutes a day inside the room it produces enough CO2 to make it to that magic 1500ppm number. There are so many variables, though. I'm thinking I should buy something to meter what the actual CO2 content of my air is.

http://www.gardenscure.com/2009/01/0...ichment-guide/

__________________
“When I was a kid I inhaled frequently. That was the point.” – Barack Obama

for co2 to work it has to be constant ppm becuase what will happen is youll produce that co2but your plants are gonna use it up and when you leave your room it would definatly go back down too 300ppm my two cents