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Thoughts on rigid vs soft walls for DIY CO2
I was thinking about my DIY CO2 setup, particularly about another post
about using rigid bottles. I made my container out of a flexible walled
pop bottle. I don't get a steady bubble flow, but about 7 bubbles or so
come out rapidly a couple of times a minute. I think this is what's
happening: after a stream comes out, the flexible bottle is deflated. As
the pressure builds up again, the bottle starts expanding. Once a certain
pressure is reached, the energy in the bottle walls is released, and a
spurt of bubbles comes out.
I would guess that rigid bottles result in a steady pressure.
You can really tell that the rate of CO2 production is dependent on
temperature. Ambient temp in the house goes from about 68 to 73 or so
when the sun shines in in the morning; and the CO2 production increases
quite noticably.
I have a plan to put a small submersible heater in a rigid container, and
connect it to the timer that controls the lights.
-- Stephen
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Stephen Boulet
stephenbou at aol_com
http://members.aol.com/stephenbou/
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