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CO2 diffuser

> The diffuser was some type of white ceramic or other stone
> cylinder that passes only micro size bubbles of CO2.  The was no
> reaction chamber or any type of water driver.  Apparently the idea is
> that the tiny bubbles will dissolve before reaching the surface of the
> water.  Has anyone seen one of these in operation?

>There are some problems with this type of diffuser (via ceramic surface).
>The bubbling is not uniform, i.e. certain parts of the diffuser is not used.
>Don't place it in an area with direct light - algae grows on it and soon it'll
>be clogged.

Not that true Rod! It's not uniform,yes,but when algae grows on it,it can
be easily cleaned. I'm using TWO of ADA's Beetle counter 50 ceramic
diffusers and i think they work GREAT!
CO2 dissolves at a very fast rate and that's all i need to use...no need
for co2 reactors,etc. :-)

>You might get violent explosions in the water when the diffuser gets
>clogged or
>if you accidentally increase the pressure to the diffuser.

Yes,it COULD happen but not likely ;-)

>A cheaper alternative is to simply place the CO2 outlet hose from the bubble
>counter into the inlet of your cannister filter.  The CO2 bubble goes through
>the cannister, diffused and chopped up before being let back into the tank.

What i did b4 for this method is to remove the sponge in the filter and
replace them with bio balls which helps to "slow down" the rate of the
bubbles rising to the top...