Valve for CO2

• To: Aquatic-Plants at actwin_com
• Subject: Valve for CO2
• From: George Booth <booth at hpmtlgb1_lvld.hp.com>
• Date: Wed, 31 Jan 1996 08:40:08 -0700
• In-Reply-To: Your message of "Wed, 31 Jan 1996 03:39:02 EST." <199601310839.DAA17694 at looney_actwin.com>

> From: nguyenh at nosc_mil (Hoa G. Nguyen)
> 
> Where can I find a good back-flow-preventing valve for CO2 that won't
> dissolve in the carbonic acid?  And how much did you pay for it?

We use Dupla "Bubble Counters" on our tanks.  Besides acting as a
bubble counter (an easy DIY project), they include a check valve. 
Pet Warehouse had them for around $35 the last time we bought one. 

George in Colorado with a "9" (5 degrees and 4" of snow). 

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