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How to build a CO2 regulator for your calcium reactor.
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01/29/2015, 01:38 PM
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dnh828
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Join Date: Apr 2011
Posts: 70
Those tubes in the front and back are just there in case the diaphragm fails and it has to vent the air. In some setups you want to vent that to a specific place, but for our purpose just leave the holes be.
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