CF1 Fish Tank Filter Cartridges, Cartridges Kit for Aquarium 4 Month Service Internal Replacement Interpet (4 X Algaway Pads) 

COMPATIBILITY: Specifically designed for Interpet CF1 internal filters, ensuring a secure and seamless fit for interpet internal cf cartridge filters without modifications CONFIGURATION & USAGE DURATION: 4-set kit includes 4 filter cartridges and 4 filter pads, size 3.94x2.76 inches, providing a 4-month supply as replacement for tank EFFICIENT FILTRATION PERFORMANCE: Fish tank filter cartridges deliver efficient filtration: Traps fine debris and suspended waste, removes toxins, ammonia and heavy metals, softens water and improves water clarity BENEFICIAL BACTERIA SUPPORT: Aquarium filter cartridge promotes beneficial bacteria growth: Aids balanced biological filtration and maintains a healthy aquarium ecosystem RECOMMENDED REPLACEMENT CYCLE: For fish tank filter cartridges for aquariums, each cartridge and pad lasts up to 4 weeks; replacement every 2-4 weeks is recommended for optimal filtration performance