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[APD] Re: Pressurized CO2 Equipment

At 05:29 PM 9/13/2004 -0400, S. Hieber wrote:
>          * A two gauge regulator with a needle valve and
>            bubble counter is what you want. A needle
> valve
>            can be added if you get it from beer brewing
>            channels instead of aquarium sources. Some
>            way to count bubbles is virtually mandatory.

I beg to differ. It's probably the least necessary part of
the CO2 system. It only provides an erstatz value for the
CO2 in the water which is what one really wants to contorl.
Much better method is to use a pH and a KH test kits and
the pH/KH/CO2 table.

Without a bubble counter, it is substantially harder to adjust your CO2 rate. If your CO2 concentration is 10 ppm and you want to raise it, how far do you turn the needle valve to get to your target?

>          * A regulator is probably unnecessary. It is a
>            fairly simple matter to adjust your bubble
> rate
>            to ensure a stable pH, which means stable
>            CO2 level.

Perhaps by "regulator" here you mean pH controller and
solenoid? I would agree that a pH controller and solenoid
are luxuries and nto at all necesary. The pH will be pretty
much as stable without a controller as with one.

Oops. Brain fart on my part. I meant "controller."

Dave Millman
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