RE: [APD] Re:CO2 Reactor Questions -- or - I'm for never blowing bubbles

["LeDeaux, David" <David_LeDeaux at tripointglobal.com>]

This brings up a question I have regarding 100% absorption, or how do you
know if you've built an efficient reactor.  Is it simply because you see
none of the CO2 escaping the outlet of your powerhead/filter/sump?

I would say that my CO2 utilization easily experienced a 4 fold increase in
efficiency.  I went from running 2 bubbles a second into my Fluval to
running .5 bubbles a second into my external reactor.

The reactor I built though doesn't really follow any of the conventions that
are discussed here.  If this ascii drawing comes across ... It looks
something like this in design and methodology:


      /\
     /  \/\
     \/\/oo\ Bubbles trapped here
To     /    \
Outlet \     \
        \     \
         \     \
          \     \
           \     \
            \     \
             \     \
              \     \
               \    /
               /\  /\
             CO2 \/\ \
                    \/ From Filter


I can only assume that I am getting 100% absorption since I see no bubble
escaping anywhere.


-----Original Message-----
From: S. Hieber [mailto:shieber at yahoo_com] 
Sent: Thursday, December 11, 2003 7:01 AM
To: aquatic plants digest
Subject: Re: [APD] Re:CO2 Reactor Questions -- or - I'm for never blowing
bubbles

Whether 4 fold in each person's case or not -- hmmm, lots of factors are at
play. But within reason, I agree. I mean someone could build a really bad
reactor that's way too short or way too narrow or something and that might
not work. But an external reactor is a very simple thing -- a box or
cylinder with some plastic stuff or rocks in it to diffuse the water
current, water inlet and outlet fittings, and may (Aqua Medic) or may not
(Tom Barr's design) have a
CO2 inlet fitting. The biggest diff between an external reactor and a
canister filter as a CO@/water mixer, aside from the filter media, is that
the reactor needs to have water fed in at the top and outlet at the bottom
(that's what traps the CO2) -- canisters usually have the outlet at the top
to ensure that they burp any bubbles that collect.


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