Hi all, I have a 29 gallon topfin aquarium kit I got from the pet store and it came with everything to setup as expected. My problem is, I'm still suspicious of the filter as I can see stuff floating in the water that just stays in place. I suspect the water is not moving much at all, that or the filter is just barely keeping up. I want to change to one of those Aquaclear power filters. The 110 which can do up to 70 gallons. I figure you can never have too much filtration. How do I not lose bacteria from the current filter's pad if I decide to change filters? Is this even a problem? Am I just being paranoid about my water quality? Chemically, there is some excess ammonia from too much food but since the shrimp and using an auto-feeder, that seems to be under control now. Thanks in advance.