Co2

9 cardinal rules of growth. Once all 9 are running at 100% efficiency then co2 supplementation becomes the limiting factor of growth. Unless you're pushing the temperatures up the 88-90's you won't be utilizing 2000ppm at 73F Plant creates co2 all night long. Plant uses co2 all day long. Co2 is dense. With some knowledge and creativity you can setup your tent to extract warm air from top of tent at night leaving the majority of co2 at bottom. In a 12 hour daylight schedule, try have 8 normal and if you want to use co2 supplement 4 hours I'm the middle of a plant's day when it's beneficial to do so along with temps and humidity etc. Plant can capture around 40,000,000 micro moles of photons at 400ppm in one day Plant can capture 60,000,000 micro moles of photons at 2000ppm. Co2 increases the amount of carbon that can be captured in the same amount of cycle time. Whay it doesn't do.is magically make the plant bigger or more yielding. First you have to already push the plant to limits of its growth then applying co2 will allow you to utilize that extra 20 moles every day. 😉 Setting up optimal vpd has been shown to increase yields by 20%aking it jist as beneficial to implement as co2. But hey if there is money to be made. There will always be someone telling you blah blah blah buy.

1200-1300ppm is the sweet spot. You could go up to 1900, but that's pushing it... (input/return is not really worth putting more than 1500ppm max)

Maintain 1200-1300ppm.

If you are in an open room with a tent, there would be no such thing as giving too much co2.

Unless you are growing in a sealed system with everything controlled, adding extra co2 is largely pointless........most of it will escape before providing any benefit to your plants.

Don’t even worry about co2

To supplement what m0use said, CO2 does not become a limiting factor or even relevant until you are trying to pump more light than a standard day. If everything is dialed in, then you can really unleash the power of your lights on the plants (and only benefit when additional CO2 is added). When you supplement CO2 you also seal your room (to keep the CO2 in and to stop people from becoming ill/dizzy/passing out/dying). ~400PPM is the average outdoors for ground level, this is increasing steadily as we flood the atmosphere with our effluent streams from consuming fossil fuels primarily You're looking at more than likely double that for your average home indoors. Flooding a room may reach well over 2000 PPM.

did not see the other persons answer of 800-1200 as well. looks like its a good average.

If you are supplementing CO2 then more 800-1200ppm I think, But if you tent is not sealed its wasted and not needed. Most growers don't need added co2, its the last thing you do in a setup. everything elce must be on point. lights. air. RH. temps, feed, perect. Atmospheric levels of CO2 indoors are fine.

Com a adição de co2 extra tente deixar em entre 800 a 1200ppm. Temos em torno de 400ppm naturalmente.