Hi Lana,
(might as well entertain ourselves talking about the filter some while this cycle takes a long time...)
Could you describe in words the pathway you thing the water takes through the filter and what the material is like that these two pads are made out of. I'm not familiar at all with your model of filter.
~~waterdrop~~
ok googled my pump here is what it is
Aqueon Aquarium Power Filter 55 - Up to 55 gallon
The Aqueon aquarium power filter is ideal for all of your aquarium's filtration needs. Accomplishing mechanical, chemical, biological and even wet/dry filtration, the Aqueon power filter features higher flow rates then its counterparts, ensuring proper aquarium turnover for cleaner water. The filter's unique pump design is the first to actually be submerged within the aquarium, so there is no need for priming. This feature also helps lessen noise and the power filter's overall profile. A patented biological grid offers a large surface area for supporting biological bacteria, while a second wet/dry grid provides further biological filtration and oxygenation as the water returns to your aquarium. Easy-to-replace Aqueon filter cartridges provide optimal mechanical and chemical aquarium filtration and include 25% more activated carbon then their competitors.
specs
OVERALL DIMENSIONS 13 IN. X 5 1/4 IN. X 8 1/4 IN.
GPH 325 GPH
FILTRATION TYPE BIOLOGICAL, CHEMICAL AND MECHANICAL
POWER SOURCE ELECTRIC
APPLICATION FRESH OR SALT WATER
MAXIMUM TANK SIZE UP TO 55 GALLONS
UL LISTED YES
filters for it
Aqueon Large Filter Cartridge - 3 pk
The Aqueon Power Filter cartridge eliminates mechanical and chemical debris in your aquarium. Easy-to-replace cartridge contains over 25% more activated carbon then similar filter cartridges.
hope that helps

here is the web site i found it at
<a href="http
/www.thatpetplace.com/pet/prod/239404/i/5/product.web" target="_blank">http
/www.thatpetplace.com/pet/prod/239404/i/5/product.web</a>
6 pm reading were
ammonia 0.25
nitrites 1.0
nitrates 5
ph 7.2
temp 30C
did 70% water change