What's the story with co2 level at last 2 weeks

[Tamorin]

I've heard and read that at the end of the life cycle that you want to have lower co2 than the standard 1450 is that true? If so why? is 800 ppm a safe number at this point?

 

[slump]

There's a couple of solid theories floating around about this. First is that the trichomes can't use co2 and won't mature at a rate proportionate to the rest of the bud...resulting in a lower overall THC content. The second is that Ethylene (LINK) is required by plants in order to mature properly and co2 inhibits the production of the Ethylene.

Grow Safe

 

[Tamorin]

Thanks g scarey looking pit, get alittle more intimidating if he had the 2 different colored eyes.

 

[dam612]

Thanks g scarey looking pit, get alittle more intimidating if he had the 2 different colored eyes.

scary? looks like a cutie pie to me

 

[mccumcumber]

CO2 helps out photosynthesis, and I'm pretty that it doesn't speed the flowering time, it just make your buds grow bigger before they need to be harvested. Ethylene doesn't start degrading unless the CO2 goes above 2000 ppm, which it never should anyway. So, if I were you, I would keep the CO2 up.
What you should be more careful about is the nutes your putting in your plants. Check out what mel frank has to say about balanced nutes during flowering, you'll probably find that your npk isn't doing too well.

 

[Tamorin]

Cool great info thanks alot all.

 

[Oldgrowth]

I shut off C02 last two weeks of flowering. Your buds will mature better and TASTE better! This come from professional who averages 2 pounds a plant and has everything lab tested.

 

[justin457]

I shut off C02 last two weeks of flowering. Your buds will mature better and TASTE better! This come from professional who averages 2 pounds a plant and has everything lab tested.

Can you explain in chemical terms why? Do you know what reactions are taking place in the plant that cause that to be true? I'm not doubting you I just would like to understand.

 

[hyroot]

I shut off C02 last two weeks of flowering. Your buds will mature better and TASTE better! This come from professional who averages 2 pounds a plant and has everything lab tested.

Really.......... So your 2 lbs a plant must be outside and you can't control the Co2 there. Or your garden has vaulted ceilings and your plants finish at 18 fee tall and 10 feet wide. You really have thousands of dollars to spend on lab tests?.... yeah.... I don't think so.

I run Co2 all through out the whole grow . I have better results than when I didn't. Especially how much they swell in the last week. Running at the end is fine and like MC...... said as long as the ppm's are not to high.

 

[jdmcwestevo]

Really.......... So your 2 lbs a plant must be outside and you can't control the Co2 there. Or your garden has vaulted ceilings and your plants finish at 18 fee tall and 10 feet wide. You really have hundreds of thousands of dollars to spend on lab tests?.... yeah.... I don't think so.

I run Co2 all through out the whole grow . I have better results than when I didn't. Especially how much they swell in the last week. Running at the end is fine and like MC...... said as long as the ppm's are not to high.

ya 2 pounds a plant indoor is a lot man i've seen 1 lb a plant indoor and that was pushing it.

lab testing is cheap in california like 100 bucks or less a sample so that is totally plausible i've had my stuff tested many times