WILL THIS WORK. CHEAP CO2

[chisme]

also thanks seedbare that is a good trick to know

and i live in center of london but its in small cupboard so i think they may be suffocating from heat from lights (75 is perfect?)

[smokejaguar]

Yes,,many simple chemical and biological materials will produce Co2.But,,,it what amount given a "practical" amount of reactant.You do not want a 55 gallon drum of wort(reactive yeast/grain/sugar mix) stinking up the place.It might very well cover up the smell of growing MJ.Acid /base reactions like vinegar and bicarb. of Soda are short lived and dont produce much gas.You know plants produce C02 on their own during the dark phase.Just not enough to do anything when the lights come on.The only 100% method I know of is to crack the valve on a tank of compressed gas.Besides, after 30 yrs of growing I not sure its worth the effort.-SMOKEJAGUAR

[Funken Monken]

Chisme - 1 back of sugar, disolved into 8 pints ( a uk gallon) of water, add some form of fruit juice if you want (ie apple juice, or just ditch the water in favour of apple juice) then add some brewers yeast (avaiable from Boots). Let it go crazy, and at the end you increase your yeild + have a gallon of cider to drink

[ArtRollins]

I have started to build out twin rooms so that night air vents to the day room. I had friends that did it in Amsterdam and it worked wonders. They had huge buds.
All your stuff sounds so cool, but I agree the tank is the way, with the proper valves and gear. Too expensive for me. I think you need 2000 to 4000 ppm in the air and if too much the plants will hyper ventilate. My friends plants all puffed up and died cause he just let the co2 go without measuring.
CO2 is a known great additive, just how to deliver in an economic way. The pills in the water are not the way, it has to be delivered as a gas from above, not from roots up. The stuff I looked at were priced around 600 or so to really control it properly. They say it doubles the yield. Any first handers?

[chisme]

Chisme - 1 back of sugar, disolved into 8 pints ( a uk gallon) of water, add some form of fruit juice if you want (ie apple juice, or just ditch the water in favour of apple juice) then add some brewers yeast (avaiable from Boots). Let it go crazy, and at the end you increase your yeild + have a gallon of cider to drink

so a home brew kit expelling gas in one direction would work and ill have booze? even better

[smokejaguar]

Unless you sterilize all this equipement and follow clean controls dont drink any of this"cider".Your intestines will thank you.-usdi Agaluga

[chisme]

lol ok cheers for saving me a belly ache

[Funken Monken]

Sterilizing kit = £0.59 from boots the chemist. Honestly, this methods works, and you get some extra bangs for you r buck! but yeah, sterile all the way

[Caruso329]

Haha.. vinegar and baking soda is what kids use in their volcano science experiments. It foams up when mixed together, try it, it's fun.