New to CO2 - Biowheels got to go?


Junior Poster
Mar 4, 2009
Hi there -

I've just recently been researching the necessity of adding CO2 to my planted (algae-riffic!) aquarium. I've ordered pretty much everything I need and am now waiting for it to arrive, but my question is about my bio-wheel.

I'm pretty sure I know the answer to this - but it's got to go, right?

I'm running a Magnum 350 with dual bio-wheels. I'm actually running an aerator, too... as my fish seem to like it (though I know it makes my CO2 worse!).

When I set up the CO2 - should I remove the bio-wheels?

I should note I have about 2.5-3 inches of fluorite substrate for the plants, as well.

Thanks for any input you might have - I'm still learning about all this! :)


Guru Class Expert
Jun 8, 2007
I don't think it's necessary to remove the biowheel as long as you can keep co2 levels high enough. If you can't, then you might want to think about it.