zandor and other veteran growers quick Q.

[lovetogrow]

does co2 speed up flowering time?
this is first time ive ever used co2 and im at 54 days into flowering and they some seem ready. here's a few pics of my setup just to show you what ive been up to lately.

[lovetogrow]

pics of plants were taken 3 weeks ago. pics of room are 7 weeks ago.

[stinkyattic]

no it doesn't it just increases plant mass if your other shit is dialed in right. you still have the same # of days to harvest that is strain-dependent.

[postmandave]

well said stinky>the postman.

[Zandor]

Well I find that when I used CO² not only was my yield greater but the total time to finish was reduced by 2 weeks. You do need to have a proper sealed room and control the environment but YES it will reduce your over all time by 10-14 day's or more in some strains.

The only way to tell when you are done is by viewing the trichomes with a 30x pocket lighted microscope.

Plants don't read calendars; follow the trichomes to know for sure.

[Weed4Life]

nuf said.

[stinkyattic]

Correlation between CO2 and decreased time to harvest is actually a result of the higher temps you can run while using CO2... it's not the CO2 itself... temps increase overall metabolism.

[Zandor]

Correlation between CO2 and decreased time to harvest is actually a result of the higher temps you can run while using CO2... it's not the CO2 itself... temps increase overall metabolism.

So you are saying you don't need to use CO² it's a waste of time and money? You can just crank the temps and get the same results?

Sorry sticky but that is just simply wrong.

FACT: Carbon Dioxide Is Great for Plants

By Sylvan H. Wittwer - professor emeritus of horticulture at Michigan State University, directed the Michigan Agricultural Experiment Station for 20 years, and chaired the Board on Agriculture of the National Research Council. He is the author of the world's leading textbook on greenhouse vegetables, and is co-author, most recently, of Feeding a Billion: Frontiers in Chinese Agriculture.

â??Flowers, trees, and food crops love carbon dioxide, and the more they get of it, the more they love it. Carbon dioxide is the basic raw material that plants use in photosynthesis to convert solar energy into food, fiber, and other forms of biomass. Voluminous scientific evidence shows that if CO2 were to rise above its current ambient level of 360 parts per million, most plants would grow faster and larger because of more efficient photosynthesis and a reduction in water loss. There would also be many other benefits for plants, among them greater resistance to temperature extremes and other forms of stress, better growth at low light intensities, improved root/top ratios, less injury from air pollutants, and more nutrients in the soil as a result of more extensive nitrogen fixationâ?�.

â??Most plants includes this great plant too"

There is no way in HELL that I could have ever grown KBS with out CO².

You are correct that it will only really do you good if all the other environment factors are in harmony. CO² is a booster for the plant just like fat flower, madd-farmer, and the other flower boosters. You can grow with out them yes but you yield is not as high and your finish time is longer.


This FACT has been proven over and over again on this forum and just about every single book written on plant botany about the benefits of enhanced CO².


Sorry to strongly disagree with you sticky but thatâ??s my job to keep the facts straight.

That was the original question asked â??does co2 speed up flowering time?â?�

[stinkyattic]

NO that is not what I am saying at all.

CO2 in regular temperatures will not make plants react in the same way as CO2 in ELEVATED temperatures.

For CO2 to be effective you also need to boost your temps beyond what would be considered healthy for a plant in a non-enriched atmosphere.

In REGULAR atmospheric conditions, with ELEVATED temperatures, a plant's metabolism will crank up but it will start to show signs of stress as it transpires gases and water fastern than the roots can take up water and the leaves can take in CO2.

In ENRICHED atmosphere, the metabolism increases (and yes this is what decreases length of flowering time) BUT now there is more CO2 available, and as long as you keep up with the plant's water demands so the damned thing doesn't croak, it can put on far more mass...

Anyway we are talking different languages. I never EVER in any of my posts said that you can 'just crank up temps and get the same results'. We're talking shortened time to harvest, not whether you can grow a much better plant using CO2.

I have no idea whatsoever how you interpreted my post in that way.