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Re: DIY Co2 Diffuser


Slip a length of ugf airlift tube over the exhaust of the powerhead, and
attach it to the back wall of the tank using heater clips and suction
cups. If you angle it downward, the bubbles will fight their natural
tendency to rise, and depending on the length of the tubing, very few,
if any bubbles will escape. Works like a charm.

Augie Eppler
Green Cove Springs, Fl.
> Date: Tue, 25 May 1999 15:33:03 PDT
> From: "Joe Anderson" <the_submariner at hotmail_com>
> Subject: DIY CO2 diffuser
> I just checked the Kh-CO2-pH relationship chart at the KRIB and confirmed my
> sneaking suspicion that Im not getting enough CO2 into my tank.  I've heard
> from several people about how to create a diffuser, but most use a cannister
> filter.  I was using both an over-the-back filter (which i've removed as
> advised) and a powerhead with the CO2 input in the venturii (sp?) hole on
> top of the powerhead.  This hasn't seemed to work for me.
> I was wondering if anyone could comment on my soln.?  I plan to use a
> clear-green tube (from a TetraBrilla filter) with the CO2 coming in where
> the air hose is attached. I would cap the top of the tube and attach it to
> the tank with suction cups provided. I would then route the sponge tube to
> the powerhead intake.  The other sponge tube I would leave alone.
> Do you think that this might solve my CO2 problem?  I'm using the 3 cups
> sugar 1tsp baking soda method now and the mixt. seems to bubble adequately
> but my pH has remained constant at 7.6-7.8 with a Kh of 11-12*.  Looking at
> the chart this means I am getting no more CO2 than what is provided by the
> atmosphere above my tank (is this correct)??
> Joe Anderson