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DIY CO2

To: Aquatic-Plants at actwin_com
Subject: DIY CO2
From: Cliff Lundberg <cliff at noevalley_com>
Date: Sat, 22 May 1999 14:33:56 -0700
In-Reply-To: <199905221948.PAA23080 at acme_actwin.com>

>From: "Roger S. Miller" <rgrmill at rt66_com>

>Plants produce an oxygen surplus only during the day while actively
>photosynthesizing.  At night they compete with the fish and *use* oxygen
>to metabolize the sugars produced during the day

So is it advisable to cut off CO2 injection at night? What's the cheapest
gizmo that would do this automatically on a DIY system? Something
that would open and close a release valve on the tube so the CO2 
goes into the room instead of the tank.

Cliff Lundberg  ~  San Francisco  ~  cliff at noevalley_com

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