Ive always wondered about this concept as well. Whether or not there is a gas exchange during the Kreb cycle "dark stage". Ok obviously the most signifgant gas exchange is during the light period(photsynthesis) but if its important to have refreshed air during dark.
rek4385 Reviewed by rek4385 on . getting stealthier.. i've switched my lights to 12/12 they go off at 9 am and back on at 9pm. but my exhaust fan is really loud my question is... can i put my exhaust on a timer as well so that during the day( or nightime if your the plant), the exhaust is off but the intakes stay on? will this slow or speed up flowering? could it decrease yeilds? Rating: 5