Excellent Filtration Performance: The filter cotton is made of cotton and carbon and has 3-layer filtering effect, which can filter and absorb 99% of the sundries, so as to keep the water source clean and the healthy growth of fish.
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15 Pack PF-L Filter Cartridges for Top Fin Silenstream PF20, PF30, PF40 and PF75 Power Filters, Remplacement Aquarium Carbon Cartridge with Zeolite
Excellent Filtration Performance – The filter cartridges is made of high density cotton 50% more nutshell activated carbon zeolite, which has 4-layer filtering effect to filter and absorb 99% of the impurities, especially absorb ammonia and nitrogen in the water. So as to keep the water source clean and the healthy growth of fish.