Fluval C4 Hang-On Power Filter – 900 L/h, 5-Stage Filtration

Fluval C4 Hang On Aquarium Filter 265 litres

Upgrade your aquarium’s filtration with the Fluval C4 Hang-On Power Filter, designed for efficient, high-capacity performance. This advanced hang-on-back (HOB) filter combines the convenience of clip-on mounting with the thorough filtration power of a canister system.

Expertly crafted for tanks up to 265 L (70 US gal), the C4 offers a strong flow rate of 900 L/h (238 US GPH) while consuming just 5 W of power, delivering a perfect blend of efficiency and performance 

Its innovative 5-stage filtration system includes:

• Two mechanical stages for effective debris removal

• A chemical stage using activated carbon for odor and toxin control

• Two biological stages—featuring a bio-screen and Fluval’s C-Nodes—for powerful beneficial bacteria growth 

A standout feature is Fluval’s refiltration control system, which allows for flow rate adjustment and increased dwell time without compromising water clarity or impacting delicate fish and plants 

Built in Italy and suitable for both freshwater and marine setups, the modular design allows you to service each media stage separately—keeping beneficial bacteria intact and preserving water quality during maintenance 

Key Features:

• Supports aquariums up to 265 L (70 US gal)

• Flow rate: 900 L/h (238 US GPH) with just 5 W power consumption

• 5-stage filtration: dual mechanical, chemical, dual biological

• Refiltration control for gentle flow and extended media contact

• Modular media cartridges for easy, targeted maintenance

• Compact, space-saving dimensions (approx. 22.8 × 16.5 × 21.5 cm)