Mini-split A/c system

Best that can be done?? This is off topic, but I do not run any AC and my 20lb tank lasts 3-4 WEEKS for my 12.5' X 15' flower room, depending on outside temps. :confused:

You're lucky dude... I have everything sealed, weather stripping on the door. I can get another few days if I lower the co2 to 1200 PPM , please share any tips I am all ears.
 
You're lucky dude... I have everything sealed, weather stripping on the door. I can get another few days if I lower the co2 to 1200 PPM , please share any tips I am all ears.
my sealed room with 3 open 1000 watt hps and a 24,000 btu ductless, my c02 @1500ppm's, I get 30 days, @ 1200, I get another 2 weeks.
 
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