Yeah I was thinking about doing the dry ice method. It's basically just Frozen carbon dioxide and as it melts it emits the gas. I'm just not sure where to buy it in pieces smallVinegar / soda method works well for very small spaces . But larger spaces into bottled co2 now.
Another method is dry ice in a cooler with vent on it. Placed high, co2 evaporates but since it’s a heavier then air gas, it sinks and you can play with vent opening to control co2 level. But you will need a co2 monitor to determine the co2 levels
Welding supply houses or grocery storeYeah I was thinking about doing the dry ice method. It's basically just Frozen carbon dioxide and as it melts it emits the gas. I'm just not sure where to buy it in pieces small
It is my contention that the observed "sinking" of CO2 is the result of it being cold (not its chemical density) and thus more dense than the surrounding atmosphere. Your fans should mix it up quickly and then there will be no stratification.Placed high, co2 evaporates but since it’s a heavier then air gas, it sinks and you can play with vent opening to control co2 level.
I use tanked co2 and my tents are vented. I use quite a bit during veg 20/4, but not very much in flower 12/12. I would try tanked if these dont fill your space.
It is my contention that the observed "sinking" of CO2 is the result of it being cold (not its chemical density) and thus more dense than the surrounding atmosphere. Your fans should mix it up quickly and then there will be no stratification.
Yes I have a sensor in the tent just above the canopy. It works and Iv'e noticed a huge difference.Do You monitor the levels or know what you’re able to keep the PPM’s around? I’d like to add a tank too but was worried my fan just pumping it out faster than the plants are using it.
Using a bottle with a sentinel controller, observed:IMHO these easy Co2 things dont do much to benefit the plant. If you go C02 you've gotta seal up tighter than hell and use AC, and ideally a burner or tank on a regulator with a Co2 monitor to keep the C02 up around 1200-1500ppm.
Unless you go to that extent, you may as well just pull air through the space.
I'm my experience Co2 does benefit from higher temps. I am not an expert on Co2 by any means, but everyone I know who uses it runs their garden on the warm side specifically to increase plant metabolism and transpiration, since the plant can use more nutrients with an increase in Co2.So you say 80° aren't needed or even beneficial?
Sounds interesting.
What's the effect of higher temps then, just more transpiration?
I'd probably have problems to reach such temps most of the year and thought about going back to Cdm bulbs or air cooled leds to get temps up in my new closet. But if it ain't necessary or even detrimental that would be great!
I am not an expert on Co2 by any means, but everyone I know who uses it runs their garden on the warm side specifically to increase plant metabolism and transpiration, since the plant can use more nutrients with an increase in Co2.
People should think about building their own soil that creates an environment for microbes within that soil that they want and consuming carbon at high rates. You need the microbes anyways to process nutrients, so why not value-add some savings into your grow and maximize their breathing by maximizing their numbers. Build a soil from scratch that is very heavy in carbon. Activated carbon from (burned wood, corn, rice, bone). Then control the breathing of those microbes by controlling the amount of water you give them. It is amazing how much CO2 that microbes can make for an entire grow and its cheap once you get the ingredients, temp and moisture correct.
"CrimsonEcho, post: 2229082, member: 90951"]
What would be the ideal scenario in this case? Moisture and temperature-wise to help optimizing co2 production from microbes.
Once soil dries, the microbes slow so for maximum CO2 never you need to prevent it from getting dry. The slowing, speeding of microbe respiration is called drying/rewetting. Temp seems to be 80-85 for me and my strains. Late in flower, I let my plants start to dry out and the co2 goes down, so i can bring temps down too.
Also how much co2 can microbes produce in a day? Do plants uptake co2 from roots or is it dispersed into air?
It depends on the soil mix but you can easily get above 800-1000ppm and keep it that way for the day on soil respiration alone but you need a a fan below to dissipate the CO2 from bottom up.
One last question, would you think it would be possible to seal a room and solely rely on the co2 production of the microbes?
Yeah somebody may want to use a bottle as backup but like i said, seal your room and make a mix. I have a bottle as well. It depends on how much volume of soil you have though and if you are willing to make a new mix every time. 50 gallon bags are heavy.
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