30 days flowering (pics) CFL
- Thread starter scwascwa
- Start date
quick question did you see a significant change in yeild when you first got the co2 tank
DubB83
Well-Known Member
You only need CO2 if your running temps over 80. Also you have to not run the circulation fans during lights on or else the CO2 will never amount to enough to get any noticeable growth.
Don't waste the time on a little 20oz bottle. If you want to generate CO2, brew 5 gallons of beer or ferment 5 gallons of wine, but you will have to start a new 5 gal bucket every 2 weeks, so that will take up all kinds of space.
Also, during the first 24 hours the yeast needs oxygen, do not cap the bottle and your yeast will make more CO2.
CO2 is heavier than air so if you set it on the floor of your grow box it will never reach the leaves, also your roots take oxygen and CO2 where they expect oxygen might cause problems.
I brew and have noticed a tiny change, but not enough to justify it for marijuana purposes.
Your light should be on a sealed air system before you do anything like this though or you will just cook the plants.
~GG420
Don't waste the time on a little 20oz bottle. If you want to generate CO2, brew 5 gallons of beer or ferment 5 gallons of wine, but you will have to start a new 5 gal bucket every 2 weeks, so that will take up all kinds of space.
Also, during the first 24 hours the yeast needs oxygen, do not cap the bottle and your yeast will make more CO2.
CO2 is heavier than air so if you set it on the floor of your grow box it will never reach the leaves, also your roots take oxygen and CO2 where they expect oxygen might cause problems.
I brew and have noticed a tiny change, but not enough to justify it for marijuana purposes.
Your light should be on a sealed air system before you do anything like this though or you will just cook the plants.
~GG420
HipE
Member
BRO!! where did you get those fans youve got in your setup. those look perfect for what i need. plz plz plz help. thank you in advance and +rep
HipE
Member
haha. wow. that is exactly what i have in my box right now. but its just not cutting it. my box is about the same size as yours... but its probably because i have got six girls to try and keep happy.got them out of an old computer.
got a dc phone charger splice into the wires hooked the 12v DC fans up to a 12v DC cell phone charger plugged right into the wall
what size fans are they? they just looked pretty large in the pic. thats why i asked.
c5rftw
Well-Known Member
got them out of an old computer.
got a dc phone charger splice into the wires hooked the 12v DC fans up to a 12v DC cell phone charger plugged right into the wall
phone chargers run at 3.7v... what kinda phone you got? hey if it works, it works
HipE
Member
fortunately even though the computer fans are 12 v. they dont actually run at that level. that is why phone chargers have enough power to make it work
my problem is that its just not enough power to keep the air fresh and cool.
HipE
Member
..... to expensive. too loud. my box is 2 ft wide 3 ft tall. i dont need anything gnarly. just a little more powerful than computer fans so i can attach a carbon filter.
