Aquatop FORZA Replacement Filter Inserts with Premium Activated Carbon 25-40, Black, White, 1ea/2 pk
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The FORZA 25-40 replacement cartridge insert is made of strong poly-fiber and collects organic debris for easy removal. Filled with AquaTop's Premium Activated Carbon, these replacement pads are extremely easy to install and help keep aquarium water crystal clear and free from odor.
NOTE: AquaTop recommends replacing the Filter Insert filled with Activated Carbon every 4-6 weeks. Aquariums with heavier livestock loads may require more frequent replacement.