if people suggest not changing your filter pads until they are basically shot, but also suggest not using carbon all the time, and that old carbon can leech stuff back into the water, that puts people who use cartridges in a bad spot.
I'm wondering though, with the Bio-Wheel, does changing the cartridges really matter? Doesn't the bacteria live mostly on the bio-wheel?
I'm wondering though, with the Bio-Wheel, does changing the cartridges really matter? Doesn't the bacteria live mostly on the bio-wheel?