Bacteria Question
Yes, the other biomedia that is submerged in the water flow of the filter still works better than something sitting stagnant in the tank but the Bio-Wheels, being a wet-dry filter (so it has a lot of surface area exposed to the air also), works even better according to the peer-reviewed studies that Dr. Tim did back when he invented the Bio-Wheel.
Also, biomedia used as the last stage of filtration, whether it’s a sponge, floss pad, biomax or other ceramic type granules, etc., will be getting the water that already has some ammonia/nitrites in it from the previous layers of filtration and the nitrifying bacteria that live in/on those layers so it’s getting nice clean (not the actual detritus that partially blocks the other layers) water with the food (ammonia/nitrite) that the nitrifying bacteria need to really grow large colonies. As the last layer, it’s far less likely to get clogged up with detritus which would block oxygen rich water from reaching all the microscopic cracks and crevices in the specialized filter media or the less specialized kind.
Lenny Vasbinder Fish Blog - http://GoldLenny.blogspot.com (Links to any articles referenced in above reply are listed on the right side, alphabetically under Labels and also under Archives by Year, Month)
Category: Philippines Internet Koi Society
