Fluval FX4 – High Performance Canister Filter

💦 Fluval FX4 – High Performance Canister Filter

The Fluval FX4 is a powerful, mid-size canister filter in the FX Series lineup—offering professional-grade filtration for aquariums up to 250 gallons. Compact yet extremely efficient, the FX4 delivers exceptional mechanical, chemical, and biological filtration thanks to its large media capacity and Smart Pump™ self-monitoring system.

Perfect for heavily stocked tanks, cichlid setups, planted tanks, and marine aquariums needing superior water clarity and strong flow.

Multi-Stage Filtration • Smart Pump™ Technology • For Aquariums up to 250 Gallons

🌟 Key Features

💨 High Flow Rate – ~700 GPH for excellent circulation
🔁 Multi-Stage Filtration with large media baskets
🧠 Smart Pump™ Technology automatically optimizes performance
🔧 Self-Priming Start-Up – No manual siphoning required
🧼 Easy Maintenance – Utility valve makes draining simple
🔇 Quiet & Powerful – Engineered for low-noise operation
⚙️ FX-Series Durability – Rugged canister construction built to last
🌊 Freshwater & Marine Compatible

⚙️ Product Details

• Brand: Fluval
• Model: FX4
• Flow Rate: ~700 GPH
• Aquarium Size: Up to 250 gallons
• Filtration Stages: Mechanical • Biological • Chemical
• Included Media: Foam pads, Bio-Foam, Bio-Max rings
• Dimensions: Compact FX-series footprint
• Use: Freshwater & Saltwater

💡 Ideal For

• African & South American cichlids
• Heavily stocked community tanks
• Planted aquariums needing high turnover
• Goldfish aquariums
• Saltwater FOWLR & reef tanks
• Hobbyists who want FX6 power but in a smaller size

❓ FAQ

Q: What size tank is the FX4 best for?
A: Tanks between 125–250 gallons perform best with the FX4.

Q: Does the FX4 include filter media?
A: Yes—comes fully loaded with mechanical and biological media.

Q: How often do I need to clean it?
A: Typically every 1–2 months, depending on bioload.

Q: Is it quiet?
A: Very—Smart Pump™ monitors and reduces vibration/noise.