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Re: Aquatic Plants Digest V3 #928

At 03:48 AM 3/25/99 -0500, Dennis asked:
> My regulator is basically none functional below 6psi and only 
>stable above 10 psi.  Believe me the flow difference between 6 and 10 psi can
>be considerable.  
>Now for my question.  What size needle valves are people using on there
>CO2 system.  I want to upgrade to something less touchy in adjustment than
>I have but am finding a large range in the catalogs.

Hoke makes a very nice microcontroller needle valve but it is big bucks
(over $100).
Better just to use an Ehiem diffusor which runs quite nicely in the
14-18psi range.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com