Small Filter Cartridge Compatible with RF-S Filter: 6 Counts RF-S Filters Cartridges Replacement, Unit Size: 8.1*1.9 inches. This aquarium filter cartridge is compatible with Desktop Aquariums with Small Retreat Filters
4 Stage Filtration: Better thickness dual-sided mesh provides better filtration, Ultra-Activated carbon instead of ordinary carbon, add processed zeolite which can effectively filter and absorb impurities, to keep clean and healthy aquarium environment
Efficacy of Zeolite: Adsorb ammonia, heavy metals and other harmful components. Balance the PH value of the water body. Improve the fertilization efficiency make your aquatic plants, nitrifying bacteria grow faster, live more comfortable and more health
Quick Install: Turn off the filter and remove the used cartridge and flush the new cartridge under water to remove dust. After rinsing, insert the cartridge into the flushing chamber and make sure the filter cartridge fits completely into the chamber
Professional After-sales service: We recommend that you replace the filters every 2-4 weeks to maintain water quality (depends on the environment of the aquarium system), Please assure the model of your filter before choose the filter cartridges
