OK so this is my first post i haven't seen a section on this in this site but if i have missed it then please forgive me. So we have a grow room and we all know that the one thing our plants love is CO2 although introducing CO2 has always been an expensive upgrade for the grow room... what if there was an easy and cost effective way of providing your crop with the CO2 it loves?? Well there is!!!! yes that's right and all you need is:
2lt plastic bottle and lid
and dry activated yeast (unactivated yeast also works you just need warm water to activate it)
First off take your 2lt plastic bottle remove the lid and drill a small hole through the center big enough to fit a small air pipe into. then put about 10 table spoons of sugar into your bottle along with one table spoon of dry yeast then fill the bottle about three quarters full screw on the lid and give the mixture a good shake (remember to cover the hole you drilled in the bottle lid you don't want to make a mess) All you are doing is brewing alcohol in the bottle as it ferments it releases CO2 this process lasts for roughly two weeks after that replace the mixture following the same process you used before.
Once this is done it takes about an hour for things to happen place the bottle in your grow room and attach a air pipe in the hole you drilled in the bottle lid and place the tube end in the center of the plant. Use one bottle and air line per plant and watch the results i was amazed