I didn't know that... thanks for the info. + Rep

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buds worth your a life saver, good looking. i watched that green guy's youtube video and thought he was using the co2 cannister when the lights were off, i must of been mistaken. onecan, i always like it when people speak with confidence and intelligence and the shit your saying makes sense to me. all the information i've received has been cataloged into my mental rolodex. it's funny i blow between a half to a ounce a day and can have short term memory loss but, i know that somewhere in my brain information is stored and seems to pop right back up when i need it. thanks again

Yup co2 only when lights are on and you want higher temps of 80-85 F..To get the benfits you need to keep co2 ppm levels around 1200-1500 ppm at all times and do a complete room air exchange every 2 hours minimal. Have the room air exchanged so all the old air leaves and fresh air comes in about 10 minutes before a fresh co2 fill then use dampers to close off the vents so the co2 stays in the grow area.Dont stay in the grow room with the correcdt 1200-1500 ppms as it can make you sick.Co2 is heavier then air and will fall so have a fan down low sucking air from the floor and recirculating it back up into the air so its used.The 2 liter bottle will kinda work if you use 3 or more for a small grow box like no more then 4x4x4 max and you have to keep them fresh and stir a few times a day. under 1000ppm your just wasting time as you wont get what your after.remeber you have to excahnge the air still with co2 and yes you can have to much co2 and choke your plants to death