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Re: Aquatic Plants Digest V2 #797

To: Aquatic-Plants at actwin_com
Subject: Re: Aquatic Plants Digest V2 #797
From: gomberg at wcf_com
Date: Thu, 26 Jun 97 20:29:44 -0700
In-Reply-To: <199706261948.PAA10426 at acme_actwin.com>

On 06/26/97 at 03:48 p, Bill (Aquatic Plants Digest) said:

>Can anyone tell me how long a 10# CO2 cylinder should last of I'm
>bubbling 2 bubbles/sec. on a continous basis?

More than you wanted to know:  The molecular weight of CO2 is 44
(close enough) and there are 22L in a mole, so CO2 weighs 2g/L
(close enough).  So 10# is 4540 g or 2270 L (close enough).  There
are 16 bubbles to the 1/4t on my setup, or 64 bubbles per t or 400
bubbles per oz or 14K bubbles per L.  So a 10# tank makes
30Megabubbles.  Now at 2/sec, you have 7K/hr=170K/day. 6days/meg=180
days/tank.  6 months per tank.  Wasn't that easy?

1 bubble/sec=10# per year

-- 

Dave Gomberg, FormMaestro!                     http://www.wcf.com
gomberg at wcf_com
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