mrweedster
Active Member
i have read through the faq and a few threads on co2 but i haven't found out what i was looking for if someone can help . with the co2 i have about 75 square feet and have all the settings for the tank and reg so i am good that way . when i am using the co2 i want to time it so my exhaust fan shuts off when i am going to give the plants a burst . what i wanted to know how long do i need to keep the exhaust fan off ? also how long does it take the plants to suck up the co2 ? thanks for your help