I want to use part of my basement which is on floor -1 of my building to produce some of my magical medicine. The air in the basement is stuffy and stagnant and my nose don't like it, does that mean my crop won't either, or as long as I keep the temperature down and air circulating I'll be OK.
Ventilation is always good. Sounds like you need to get some air moving down there.. As far as CO2 plants do need air I use to run CO2 for my plants and you can over do it anything over 1600ppm is to much. I stopped running CO2 because I have so much ventilation I was just blowing all the CO2 outside lol best of luck
Only too much co2 is over 5000ppm and thats bad for humans anything over 1500ppm your just wasting. My room is sealed with two mini split head units. I only exhaust every third day approximately or if I'm spraying. I run co2 have for 4 years
damn I have a 8x4 doing critical kush 3 600 watters and a 4x4 with a P1200 led and 1 10x40 canlite and 2 8 x40 canlites
All other microorganisms in your soul will need oxygen to thrive, not sure if O in water is enough for them?!?!? Either way I stick with the natures way and pull in fresh air all the time.