hey so i found this c02 monitor( http://cgi.ebay.com/CO2-Carbon-Diox...ash=item35a2c7f05e&_trksid=p4634.c0.m14.l1262 ).... and i was wondering if the ppm are set to 1500 then the monitor should tell the regulator to let out more co2 when ppms drop correct? now how would i use a air exhaust and air intake to co-exist with random farts of c02?
