CO2 for your plants

i've been using a 2 liter bottle with 2 cups of sugar and a half a teaspoon of yeast and holes poked in the cap. i shake it up probably twice a day but i have no idea if its even doing anything. i was watching these videos on youtube called How to Grow Green and i saw the guy using "bubbly" water in a spray bottle and he just sprays it on the leaves and he says they get the co2 from the spray. im assuming his "bubbly" water is seltzer water and if so does anybody know if this method is better or worse than the 2 liter bottle method?

Neither method works worth a shit, any effect will probably go unnoticed. If you are really serious about CO2 you need to spend some cash and get a bottle/regulator/solenoid setup or a CO2 Generator.

hehe aight i think i was starting to figure that out because it doesnt seem to help that much anyways. thanks.

It probably doesn't help but if you want to be sure then get a test kit and test the air with and without the bottle. You should try to get 1200 ppm or better but be careful I've seen big problems with newbies using CO2. Especially with those burners! Remember more CO2 means you need more light, water, nutes, etc.

born2killspam helped me with my math on the reacton caused by baking soda and vinegar...this is easier and more instant than yeast sugar but also easier to overdose...yeast and sugar make a molecule of Co2 and a molecule of Alcohol for every molecule of sugar eaten...up to 50% of the sugar is turned to Co2 over the whole time...

Baking soda and vinegar can reach 53% Co2 relese from the original mass of the baking soda...

heres the math.
Simplifying the rxn to calculate only what we care about, 1 mole of baking soda makes 1 mole of CO2.. (A mole is like a chemistry dozen.. It works out such that one mole of hydrogen 'atoms' weighs 1g, [and 1 mole of H2 weighs 2g]).. One mole of baking soda weighs 83g, 1mole of CO2 weighs 44 grams, so you'll end up with ~53% of the initial mass of BS in CO2..
1mole of any gas will occupy roughly 23L of space at standard temp/pressure (just under 1cuft).. Plants need that diluted by about 666x though to hit 1500ppm..

Thanks to him for helping me with teh conversion because I would hve never known how MUCH Co2 I was producing and with this method you clearly see instant Co2 is made and in such a concentration itll kill your plants..
So start small with teaspoons and see how they react...

Just a suggestion