4" Filter Cup Compatible with Standard 4" Filter Sock Holders 3.5" Height 2-Pack

3D printed filter cup 3.5" height designed for Standard 4" Filter Sock Holders

• FILTER SOCK REPLACEMENT: This 4-inch media cup serves as a practical and cost-effective alternative to traditional filter socks in aquariums and sumps, simplifying filtration maintenance
• VERSATILE MEDIA COMPATIBILITY: Designed to hold inexpensive filter floss for mechanical filtration, and can also accommodate chemical filtration media such as activated carbon or GFO for enhanced water quality
• REEF-SAFE CONSTRUCTION: Manufactured from durable and reef-safe PETG filament material, ensuring long-lasting performance without compromising the health of your aquatic environment
• EASY MAINTENANCE: Provides a cleaner and more convenient filtration solution compared to messy filter socks, reducing maintenance time and ongoing replacement costs
• Fits standard 4-inch filter sock chambers found in many aquarium systems, offering a simple drop-in installation for immediate use