Fluval Sea CP4 Circulation Pump
The Fluval Sea CP4 Circulation Pump features a spacesaving and innovative design that minimizes tank intrusion, improves energy efficiency, and produces a smooth, broad stream resembling natural ocean currents.
Unlike traditional pumps, the Sea CP4 delivers a gentle, indirect current that supports coral health without causing strong water movement.
Key Features
- Simulates natural reef currents
- Adjustable flow direction
- Exceptional hydraulic performance with the lowest energy consumption per liter per hour (LPH)
- Super quiet operation compared to most models
- Safe to use with a built-in timer system; will not cause pump failure
- Secure, flexible aquarium mounting
- Compact and efficient design, easy to install and maintain
| Specification | Value |
|---|---|
| Flow Rate | 120 LPH |
| Power Consumption | 3.5 W |
| Noise Level | 32 dB |
| Material | ABS Plastic |
| Dimensions | 100 x 60 x 100 mm |
FAQ
What makes the Sea CP4 different from other circulation pumps?
The Sea CP4 simulates natural reef currents with a gentle, indirect flow that supports coral health. It offers adjustable flow direction and operates with lower energy consumption per liter per hour compared to similar models.
Is the pump quiet during operation?
Yes, the Sea CP4 operates at a noise level of 32 dB, making it one of the quietest circulation pumps available, ideal for quiet aquarium environments.
Can the flow direction be adjusted?
Yes, the pump features adjustable flow direction, allowing users to customize the current pattern to suit their tank layout and coral placement.

Gordon Greene –
The Sea CP4 has been running for three months and provides a steady, gentle current that helps my corals thrive. It’s very quiet and doesn’t disturb the tank’s natural balance. Installation was simple and the pump fits well in my 120-liter tank.
Molly Grant –
I appreciate the quiet operation and the way it mimics natural reef currents. The flow direction adjustment is useful for targeting specific coral areas. A bit small for larger tanks, but perfect for my mid-sized setup.
Kimberly Baker –
This pump is reliable and energy efficient. I didn’t notice any vibrations or noise, and the timer function works smoothly. My tank feels more stable now with the consistent current.