Thanks for the reply SC hope you are doin well bro..

I can actually just plug my unit into a socket in any room I want to test and it will give me digital readout. You must be talking about checking the calibration on my equiptment. That is a good idea SC. Will do.

My room is 930 sqft but that wouldn't matter too much if the room were sealed. The only difference would be when I recharge the room at lights on.
CaliJay Reviewed by CaliJay on . Co2 tank empty in 3 days.. First thing - I am running an auto disperse system. I set the ppm at 1800 and let the thing run. It was empty 3-4 days later. How long should a 20 lb bottle last in a sealed room? I figure it is more than 4 days???? Second thing - My Co2 monitor gives me a constant readout of current levels. I have read that ambient fresh air is around 300 ppm. My room with no enrichment was 1045 ppm this morn when I went in there!! It varies from 400+ppm to 800+ during the day????? Isn't this odd? I have a Rating: 5