The Planted Tank Forum - View Single Post - DIY CO2 questions
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post #13 of (permalink) Old 11-08-2012, 03:59 AM
Planted Tank Guru
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,015
I got mine at Ebay. Just search there for Kynar Check Valve. These are very chemical resistant, so CO2 shouldn't bother them. Or, go to US Plastics and do the same search.

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