Aqueon Replacement Filter Cartridges 12 pack Medium 4.9" x 2" x 5.7"

Keep your aquarium filter running at peak performance with Aqueon Replacement Filter Cartridges in Medium — a 12-pack for extended, hassle-free maintenance. These uniquely engineered cartridges feature even carbon distribution throughout the media, ensuring more thorough chemical filtration and a longer cartridge life compared to standard designs. High-quality activated carbon removes odors, discoloration, and impurities from your aquarium water, keeping it crystal clear between water changes.

Installation is simple — just align the bottom key slot for an accurate fit, rinse briefly to remove carbon dust, and drop it in. The Bioholster should be left in place when swapping cartridges, as it houses beneficial biological bacteria essential to a healthy aquarium cycle. Replace every 4 to 6 weeks for optimal filtration.

Features:

• Even carbon distribution for more thorough filtration and longer cartridge life
• High-quality activated carbon removes odors and discoloration
• Bottom key slot ensures accurate, secure fit inside the filter
• Rinse before use to remove carbon dust
• Do not clean Bioholster when replacing — preserves beneficial biological bacteria
• Replace every 4–6 weeks for optimal performance

Item Details:

• Size: Medium
• Pack: 12 cartridges
• Dimensions: 4.9" x 2" x 5.7"