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Cannabis_Kingstarted grow question 4 years ago
I bought the exchange 360 CO2 bag and one side is black the other normal is this normal
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TheUk420Showanswered grow question 4 years ago
yes thats the co2 being used up :) when its fully black you will want to change it for a new one if you want to have high levels of co2 though i think if you have a gas boiler and a pilot light you have about 600 anyway which is more than enough for them :)
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