"Paul" wrote in message
...
Just want to try and maximize the effiency of the C02 and I am currently
running a bio wheel power filter on my 46g bow front and am considering
switching to an Aqua Clear. Am I right in thinking that the bio wheel will
dissapate more C02 into the air out of the tank than a regular Aqua Clear?
Thanks.

I have an AquaClear on my 30-gal. high-light tank and I try to get as much
surface agitation as possible from it. The reason is that it keeps the CO2
stable. If the water level in my tank is low enough so that the output from
the filter does not disturb the surface too much, then I either have a
dangerously high level of CO2 at night or an insufficiently low level during
the day, depending on my CO2 output. But if I have the tank water level high
so that the filtered water flows along the surface and agitates it, I can
keep the CO2 level high and still have a daily pH swing of about 0.1. So if
you use pressurized CO2, don't worry too much about surface agitation.
__
Alex
pcalex (at) hotpop.com