The Planted Tank Forum - View Single Post - Question about setting up Co2 regulator
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post #31 of (permalink) Old 11-10-2012, 07:48 PM
TheKribKeeper
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Join Date: Oct 2012
Location: California
Posts: 130
Could be a bad check valve some need high psi to open referred to as cracking pressure. Or it is stuck closed. But you did right by trying a cheap plastic one now you know the problem lies with the check valve or the diffuser.
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