Warm Reminder: Please double-check the size details before purchasing to ensure it meets your needs
【Compatibility】Fits strictly within 3.7 x 2 inch filter chambers; compatible models include EF-S Element and BF5 BETTAFLO for desktop aquariums.
【Multi-Layer Filtration for Clear Water】Made with high-density filter cotton and activated carbon, this aquarium filter cartridge helps trap debris, reduce impurities, and remove unwanted odors, keeping your tank water clean and fresh
【Replace Every 2–4 weeks for Best Results】To maintain optimal filtration performance and water quality, it is recommended to replace the fish tank filter cartridge every 2 to 4 weeks, depending on usage and tank conditions
【Easy Installation & Quick Activation Tip】 Simply rinse the cartridge under cool water for 30 seconds to remove any transit dust, and if the carbon beads have shifted to one side, a gentle shake will quickly redistribute them for uniform filtration ; then, insert it directly into the filter chamber—no tools needed, making it perfect even for beginners.
【Durable & Fish-Safe Materials】 Each EF-S aquarium filter cartridge is made from durable, fish-safe materials, providing reliable filtration while supporting a healthy aquatic environment for betta fish and other small species.
