Re: [APD] Using powerheads for a CO2 diffuser

["S. Hieber" <shieber at yahoo_com>]

The gas line feeds into the pump intake, at the volute,
instead of the output nozzle. YOu can add a short piece of
undergravel filter riser tubing to the bottom of power head
and feed the CO2 line there. Or poke the tube into the comb
on the bottom of the powerhead if it has one.

The Rio were once quite popular with the reefers for
venturi protein skimmers, then TAAM reportedly had a rash
of disintegrating impeller cores about 5 years ago and the
crowd seemed to swing over to the Max-jets.

But if you want mist, check out what's being put on venturi
protein skimmers. The reefers are a bigger market and
understandably get better responses from the manufacturers
than we planters do.

Have gas, have fun,
Scott H.

--- Vaughn Hopkins <hoppycalif at yahoo_com> wrote:

> I'm sorry to be so dense, but what other inlet?  You have
> water coming 
> in, CO2 coming in thru the venturi (?) and water plus CO2
> exiting.  So, 
> what other inlet are you referring to?  I confess that I 
> have never  
> yet understood the way you use the venturi.
> 
> Vaughn  H.
> On Tuesday, December 6, 2005, at 04:42 PM, Thomas Barr
> wrote:
> 
> >  No modification is needed, simply attach the CO2 line
> to the inlet 
> > and connect the other inlet to the the venturi.
> 
> _______________________________________________
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> 


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