Sixty-Eight Posted March 1, 2015 Report Share Posted March 1, 2015 im thinking if i can come up with the $600 im going to think about adding Co2 for my flowering period but im having difficulties using the online Co2 calculators, does anyone know how to calculate how much Co2 is needed in litres? im on this site https://hydrofarm.com/resources/co2calc.php i punch in 4.5x4.5x8 foot as a rough estimate of my new tent (1.4x1.4x2m) desired Co2 levels 1500PPM its saying i will need 0.2 cubic foot per hour that equils 5.66 litres per hour now looking at Co2 cylinders there is one on ebay 9kg holds 6 litres if im correct that cylinder will last 1 hour? how does this work? the whole imperial to metric has me confused, should i just think about running constant Co2 with constant venting and placing the Co2 hose behind the circulation fan? if this would work better im assuming i would need some type of bubble trap regulator or something along those lines to count the bubbles of Co2 emmited? this whole Co2 thing ive never worked out Quote Link to comment Share on other sites More sharing options...
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