Are the pads or the floss better? Is 14oz of filter floss more than a 30" x 36" micron pad? http://www.drsfostersmith.com/product/prod_Display.cfm?siteid=7&pCatId=5382 I think that all the "crap" sticking to my walls is suspended particles that hopefully the floss/pad can take care of. A lot cheaper than a diatom filter. All help is greatly appreciated...