how important is added co2 to your grow? is it a must have? i have read in the faqs. about diy co2. .the only one i saw was the co2 cartridges and bike pump...dont want to use that...i saw a thread once by someone with a one liter bottle and a hole in it, with yeast ?? does anyone know how to set that up?

plants are almost 2 months, 15 days into flowering and are thriving,, very healthy...so what would added co2 make them do differently?? thats what im wondering

__________________
WORD TO YOUR MOTHER-everything i say here is not to be taken seriously, I only come on here to look cool. and man do i look cool.

Make wine alongside your grow!

Yeah yeast will work in some kind of sugar water solution... do a search i'm sure theres plenty of info on it.

__________________
I am not currently, nor have I ever grown, smoked, or even seen real marijuana.

co2 will greatly increase your yield if u can afford it use it u will be glad u did

i am going to set up some kind of co2..just dont know what to use...butter what do u use? have any ideas for something cheap to set up? thanx for the info

__________________
WORD TO YOUR MOTHER-everything i say here is not to be taken seriously, I only come on here to look cool. and man do i look cool.

i have a propane co2 generator they are not cheap GEN-1eLP CO2 Generator [GEN-1eLP] - $369.95 : neHydro.com, Hydroponics and Gardening Supplies

this is what i use

If you have a small closet, take an empty gallon jug of milk. Add 6 cups of sugar, 2 tablespoons of yeast, and fill the jug halfway full. Shake the snot out of it and leave the cap off during the lights on cycle. When the lights turn off, put the cap on the jug. That mixtures should last about 2 weeks, than you have to do it all over again.

awesome thanx godspeed...thats exactly something i was looking for....two weeks tho.? shouldnt i change it like once a week...or every 4-5 days??

__________________
WORD TO YOUR MOTHER-everything i say here is not to be taken seriously, I only come on here to look cool. and man do i look cool.

The yeast will keep eating the sugar for about 2 weeks. Once you notice the film, clumpy shit (whatever it is) isnt floating on the top of the water anymore than you need to change it out.

Setting it going
The final step is to prepare the mixture which will produce the CO2. Dissolve 1 cup of sugar (any type of sugar will work) in about 500ml - 1 litre of water and pour into the generator. Dissolve 1/2 - 1tsp. of yeast (bakers yeast is available at any supermarket) in a small amount of warm (NOT HOT) water, add to the generator and top up to the required level with cold water. It is important that you do NOT overfill the generator. Once the yeast is activated and starts to produce CO2 a certain amount of ``froth'' will be produced. Enough head room must be left to ensure that this froth is not forced up the airline and into the aquarium. The addition of 1 tsp. of baking soda will help buffer the mixture and extend its working life. It also reduces the amount of froth produced.

If you use hot water to dissolve the sugar allow the temperature of the mix to reach room temp before connecting the reactor. As this water (and the air above it) cools and contracts it may start a siphon going, dumping aquarium water into the generator, if the production of CO2 has not yet started.

The above quantities are not critical so you can experiment with them if you wish. In general the quantity of yeast controls the rate of CO2 production, and the quantity of sugar controls how long the mix will last. Ideally you want a mixture which will produce CO2 at a steady rate for an extended period of time.

This mix should produce CO2 for at least 10-14 days (often longer). As it takes 12-14 hrs (depending on temperature) for a new mixture to start producing sufficient CO2 it is best to get a new batch started 24hrs before the old batch needs replacing. Alternatively you could have two generators producing CO2, one of which is replaced every week. This latter method probably provides for more stable conditions in your aquarium.

Ok! I did make this: 2 and a half cups of sugar in 1litre of water; 7gr yeast (this is a one packet usually); and 1 and a half tsp. of baking soda. It works great! Pls ensure enough space for froth!!!
Good luck!
Note: Pls make it in a closed bottle with a hole on a cap because it makes splashes all over the growbox!

Attached Images

	IMG_4034.jpg (65.7 KB, 14 views)
	IMG_4024.jpg (35.2 KB, 6 views)