Fish tank Filter Cartridges for Top Fin EF-S Element and BF5 BETTAFLO Filter,
22 Pack Filter Cartridges for Top Fin EF-S Element and BF5 BETTAFLO Filter, Thickened Fish Tank Replacement Filters Cartridge with ZeoliteNew In open box22 filters Filter Cartridge for Top Fin EF-S Filter】22 Counts Replacement Filter Cartridges for Top Fin EF-S Elements Filters, Unit Size: 3.7 * 2 inches. This aquarium filter cartridge is compatible with Top Fin BF5 BETTAFLO FILTER & DESKTOP AQUQRIUMS.Four-Stage Filtration】The filter is made of thicked cotton, Better thickness provides better filtration, 12 grams of active carbon, 5 grams of zeolite, which can effectively filter and absorb impurities in the water, especially absorb ammonia and nitrogen in the water, to keep the clean water source and provide the healthy growth environment for fish.【Efficacy of Zeolite】It can adsorb ammonia, heavy metals and other harmful components in the water. Effectively balance the PH value of the water body to achieve a stable water state