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CO2 miscellany
At 03:48 PM 9/6/00 -0400, Ivo wrote:
>I thought of another way of avoiding the gas dump. Or, better said, avoid its
>ill effects on the fish. This only applies to sump-based systems. The idea is
>to place the diffuser in the sump. The diffuser could be placed near the
>return pump intake, such that, when it is working under normal conditions,
>the tiny bubbles are sucked by the pump. If there is a suden release of gas,
>most of it will bubble out of the sump and doesn't get sucked into the main
>tank. Does this makes sense ?
Sounds good to me.
James Purchase asked:
Dave Gomberg wrote:
>"3. Get a regulator that does not dump when the tank empties (I am working
>on trying to find these) OR
>4. Include a simple pressure relief device in your system "
>Dave, could you elaborate a bit on these two points, please? What should a
>hobbyist look for in the specs of a regulator which would indicate that it
>won't "dump" when the cylinder is close to empty? Is a "two-stage" regulator
>better for this than a "single-stage" one?
I have yet to find a company that makes two-stage regulators (one regulator
feeding another). Usually folks are talking about two GAUGE regulators,
heck you can put 100 gauges on a regulator, they won't affect its function,
only measure it. In reply, James said he had found one but I could not get
their web page to display.
There are charts that SOME manufacturers have that show how input pressure
affects output pressure at a constant setting. You want a regulator whose
output pressure doesn't rise much as the input pressure drops. I am
working on making a deal for same as we speak.
--
Dave Gomberg, San Francisco mailto:gomberg at wcf_com
NEW Planted Aquaria Magazine: http://www.wcf.com/pam
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