Quote Originally Posted by grobro
what do you think the max co2 ambient level 'could be 'just with a door/window open /closed ......without a co2 add.....non sealed room....
plenty of flow.....w/exhaust fan suckin it thru....?
w/circ fan also.......
basement w/grow room within it....good clean fresh mountain air......guess i really need some type of metering $........to really know eggs ackley
I've got a co2 meter, and it wasn't cheap. Very accurate. I've never seen it go past 700 in a normal sized room, with 4 people in it.