Engineered for the largest and most demanding aquariums, the Fluval FX6 High Performance Canister Filter delivers exceptional mechanical, biological, and chemical filtration for freshwater and saltwater aquariums up to 400 gallons. Renowned for its massive media capacity, powerful flow, and dependable performance, the FX6 has become one of the most trusted canister filters among hobbyists keeping monster fish, large cichlids, predator tanks, turtles, and heavily stocked aquariums.

Powered by Fluval's advanced Smart Pump™ Technology, the FX6 continuously monitors pump performance and automatically purges trapped air every 12 hours to maintain maximum efficiency and reliable operation. Its high-capacity basket-in-basket media system provides extensive room for customized filtration, helping maintain crystal-clear water while extending maintenance intervals.

With an impressive 925 GPH pump output and integrated water change capability, the FX6 is built for aquarists who demand professional-grade filtration with easy maintenance.

Features

• Suitable for aquariums up to 400 gallons
• Powerful 925 GPH pump output
• Multi-stage mechanical, biological, and chemical filtration
• Smart Pump™ technology automatically optimizes performance
• Automatic air purge every 12 hours
• Self-starting operation
• Massive basket-in-basket media capacity
• Integrated powered water change system
• AquaStop valves for easy maintenance
• Quiet, energy-efficient operation
• Freshwater and saltwater compatible

Specifications

• Aquarium Size: Up to 400 Gallons
• Pump Output: 925 GPH
• Filter Circulation: 563 GPH
• Canister Volume: 5.28 Gallons
• Biological Media Capacity: 1.5 Gallons
• Power Consumption: 43 Watts
• Application: Freshwater & Saltwater Aquariums

Perfect For

• Monster Fish Aquariums
• Predator Tanks
• African Cichlid Aquariums
• Large Community Aquariums
• Turtle Habitats
• Fish-Only Saltwater Systems
• Heavily Stocked Aquariums

Why Choose the Fluval FX6?

The Fluval FX6 is considered one of the industry's premier canister filters for large aquariums. Its enormous media capacity, intelligent pump technology, and easy maintenance make it an excellent choice for aquarists who demand exceptional filtration performance without compromising reliability.

Whether you're maintaining a large predator tank or a heavily stocked freshwater display, the FX6 delivers powerful filtration designed to keep water cleaner, clearer, and healthier.

Why Shop with Infinity and Beyond Aquatics?

At Infinity and Beyond Aquatics, we carefully select aquarium equipment known for its quality, reliability, and long-term performance. Whether you're upgrading an existing aquarium or building your dream system, we're committed to providing trusted products backed by exceptional customer service.

When you shop with us, you'll receive:

• Genuine manufacturer-authorized products
• Competitive everyday pricing
• Family-owned small business service
• Secure online checkout
• Carefully packaged orders
• Knowledgeable hobbyist support

Shipping Information

Orders are typically processed within 1–3 business days before shipment.

Once your order ships, you'll receive a tracking email so you can follow your package every step of the way. Most orders arrive within 3–7 business days, depending on your location and carrier transit times.

Some manufacturer direct-ship or special-order items may require additional processing time. If applicable, any extended lead times will always be noted on the product page before purchase.