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Biowheels-CO2-plants redux

I know the Biowheel issue has been covered before, but I read everything I
could find in the archives and I still feel unfulfilled. :D  Are biowheels
and CO2 injection incompatible? Do biowheels significantly interfere with
plant nutrients? I know it may help to put these questions in a specific
context to be very meaningful, so let me put them in a context:

I have a Magnum Pro canister with biowheel 60 setup on a 45 gal tank. This
setup has a Y connector so that part of the return goes to the biowheels and
part goes to a standard return tube. The "factory" setup let too much water
flow to the biowheels for my taste; created lots of tiny bubbles which made
the water look cloudy and agitated water surface too much for CO2 injection.
So, I put a valve on the biowheels to control their speed, and I slow them
to the point that they barely turn. I have DIY yeast CO2 which generates
between 3 bubbles/sec and 1 bubble every 3 seconds (depending on age of
yeast), and 100 watts of T8 light. Tank temp 78-80F, kH = 5, pH = 6.8-8.2
(varies with yeast generator...I know, I need a CO2 tank). Tank is densely
planted. Plants include ludwigia, giant val, crypts, amazon swords,
aponogeton, java moss, java fern, anubius, cabomba, hygros, and ambulia.

Any opinions on biowheels, pro or con? Anywhere else I can read about
biowheel effects? If they do dissipate the CO2, perhaps my pH would not get
so high when CO2 flow rate slows?


Dan Dixon