Great thread!! I've been looking into a homemade co2 solution for my indoor garden and this looks like the perfect solution! I've read the entire thread and have one question regarding mixture temperature. From my understanding warm/hot water is required to start the fermentation process....in order to consistently produce c02 is it necessary to keep the mixture at a warm temperature or is the warm temperature only required to kick start the process of fermentation? My apologies in advanced if this question was already answer (if it was I didn't catch it).

Ninja genius setup mate. Definitely gonna give it a go. I was gonna make home made cider, would the c2o from that be damaging to the plants.(is there a difference) I'd hate to see anything happening to the girls coz i was trying to hit two birds with the one stone.(making cider).

I normally keep mine at about 24 degrees which works out well cos thats about the temp of my grow room. I think anything over 28 ~ 30 ruins the yeast & Co2 production will stop.

Sorry mate, cant say with any certainty, as ive never made Cider, but to the best of my knowledge it is all the same..

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XxNinjaxX's Super Lemon Haze - LST + Pics
XxNinjaxX's Afghan Kush X White Widow

Happy days, I'll give it a go then so for shits and giggles. Cheers ninja. I was thinking it was the same thanks.

To generate the Co2 necessary to supply 1500 ppm to a grow room around 250 square feet you would need a system much much larger than the one mentioned. You'd need 1/2 a pound of sugar a day and a much larger container than a 2 liter bottle. You'd need like 10- 2 liter bottles or 1 per every 25 square feet.

I use the co2 output from my homebrew beer and it's not a problem.


Didn't see this posted but to anyone having trouble finding an airlock just put a balloon over the top of the bottle and poke some small holes in it with a pin. when co2 is being produced it will partially blow the balloon up and co2 will escape out of the holes you poked. When you need to add sugar or make a new mix the balloon will deflate.

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Wow Best thread for my new setup m8!1x1x2 tent with just 2 plants should work great with that solution!TY

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So here's my setup. I used a gallon drinking water container. It has a flip up lid and the hole is just a tiny bit bigger that airlock valve's end so it was perfect! Just close the flip up lid to shake then insert valve into grommet!

My grow is 5x3x7 so I hope I can see some improvements as half of the girls in there are at day 45 and other half are at day 30 (from beginning of 12/12). In the next few days I will fit a hose to the end of valve and attach it to my fan.

Props to you Ninja!!

Attached Images

_MG_2066_4320.jpg (579.2 KB, 116 views)

Very Healthy looking plants, wat strain are they?

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XxNinjaxX's Super Lemon Haze - LST + Pics
XxNinjaxX's Afghan Kush X White Widow

Glad i decided to listen to my Bro and join this forum growing 5 tangerine haze plants in my closet only day 21 but looking great will be impletmenting this system of co2 tomorrow and installing metal halide for them every little bit of tweaking to produce the biggest yeild for what i am doing is greatly appreciated , Thanks Ninja +rep