Simple Co2 System

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Its all snake oil !!!! Get an empty pop bottle, and a tub of yeast from the supermarket "home brew" dept.!

1/10 of the price, 10 times the satisfaction for EXACTLY the same thing :hyper:
 
what do you add to the yeast to get it to culture? would it be best with an ait stone on the end of the tube into the tank, or just the tube?
 

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