Well, if you are referring to the six white foam pads around the exterior, I haven't seen any problem with premature clogging in my two FX5s. If you are referring to the round white and blue polyester pads which are inserted into the central chambers, then that is another matter altogether. If you see premature clogging of the white foam pads, you may have the intakes positioned too low in your tank. Many people think that canister filters are designed to remove fish feces from the tank bottom..they are not. I clean the white foam pads and FX5 interiors every 6 months. Yes, the FX5 has a quirky design, but it has its place, depending upon individual circumstances.