Aquatop FORZA Replacement Filter Inserts with Premium Activated Carbon 15-25, Black, White, 1ea/2 pk
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The FORZA 15-25 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 cartridges 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.