co2 alternative method

[Bloom SA]

Fascinating stuff here. Very useful info. The controller reads anywhere between 400-600 ppm with sensor just above the canopy

 

[moses wellfleet]

Fascinating stuff here. Very useful info. The controller reads anywhere between 400-600 ppm with sensor just above the canopy

What time of day did you measure? Plants produce co2 at night so levels will be highest the moment lights come on and will be used up during the course of the 12 hour artificial day. If you consistently have 400 - 600ppm for the whole day then that is sufficient, as it is above normal outdoor atmospheric levels, +-400ppm. If you want to provide a co2 enriched environment, 1000ppm, then you will need to make your soil more biologically active and or increase the volume of soil in your grow space!

 

[superpedro]

I am running 900ppm just from pulling air from two adults and a childs bedroom.
My efforts has been towards getting "clean" air for the last two weeks..