Key Features

• Perfect Compatible with Top Fin Systems：These cartridges are precisely engineered compatible with top fin ef-s filter cartridges and fit seamlessly into EF-S and BF5 filters. Ideal for replacing your ef-s fish tank filter, each cartridge measures 2 x 3.8 inches and offers consistent performance across top fin filter cartridges setups
• Designed for 4-Layer Efficient Filtration：Made with a 4-layer media structure, including dual-sided mesh, activated carbon, and zeolite, these filters are great upgrades compatible with topfin ef-s filter cartridge user. They’re also a compatible alternative to aqueon small filter cartridges, delivering strong filtration compatible with topfin aquarium filter
• Optimized for Small Tank Maintenance：Whether you’re running a betta tank or shrimp setup, our cartridges support most fish tank filters small configurations. Each cartridge features activated carbon to effectively remove odors and toxins, while zeolite absorbs ammonia and heavy metals, ensuring clear, healthy water. This makes it a reliable fish tank filter cartridge that keeps your water fresh and odor-free with every cycle in your compatible with top fin filter system
• Easy to Install and Replace：Just rinse under cool water and drop into the chamber—no tools needed. Suitable for replacing a used aqua culture s filter cartridge or maintaining your daily fish tank filters, these cartridges make aquarium care faster and cleaner, which you can change every 2–4 weeks to maintain water quality
• Reliable for Daily Use：Whether you're using a fish tank filter, fish filter, or a unit compatible with an aqueon filter, these cartridges are built to perform. A strong filter for fish tank routines, they keep your aquatic pets healthy and your tank water clean for longer
• Brand names and/or trademarks are used here only for product description or identification of devices and/or device types. Errors reserved
• Notice: As it is vacuum packed, please loosen it before use

Specifications