co2 cartridge

ok i came across some co2 cartridge from a bb gun i would like to release this into my grow room.. can anyone tell me a safe method of releasing the co2 from the cartridge
 

FortyTillFive

Active Member
lol i asked the same question before, and i heard it was safe but ...are you just gonna poke a hole in it? cus it will come out pretty hard and cold, be careful
 
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