The AC Series takes power filtration to the next level. Built on a best-selling platform with a 40-year reputation for exceptional quality, reliability, and convenience, this series has become a standout choice that aquarium enthusiasts know and trust. Along with its proven multi-stage cleaning, CycleGuard beneficial bacteria support, and patented refiltration system, the latest clip-on generation sets a new standard for cleaning performance, media efficiency, quiet operation, and durability. Experience the unmatched cleaning power of Fluval AC Series!

• 4-stage filtration (2 x mechanical, chemical, biological) for superior water clarity and quality
• CycleGuard preserves the biological balance of your aquarium through independent media replacement, which avoids disrupting the nitrogen cycle and is essential for maintaining clean and healthy water
• Patented refiltration system prolongs media contact time for a cleaner, healthier and more biologically stable aquarium
• Basket design provides easy access to each filter media
• Pre-filter intake strainer keeps algae filaments and debris away from pump for consistent water flow
• High-porosity 20PPI mechanical foam for improved filtering capability
• Adjustable flow control for precise adjustment
• Quick and easy maintenance
• Molded rim connection for easy installation and leveling
• All media included
• Made in Italy
• For use in freshwater and saltwater aquariums
• Filters 500 GPH