Fluval SK400 Surface Skimmer
Removes organic film on the water surface. Powerful and consistent skimming eliminates surface film quickly and prevents build-up. Fine filter sponge traps particles for clean water quality.
- Helps improve Oxygen Exchange
- Clean water allows for optimal oxygenation and light penetration as gas exchange occurs at the surface.
- Promotes fish and plant health
- Flow control slider adjusts flow strength
- Intake regulator dial allows for skimming intensity to be controlled
- Flow rate: 105 gph
| Specification | Value |
|---|---|
| Flow Rate | 105 gph |
| Skimming Capacity | High |
| Filter Material | Fine filter sponge |
| Adjustable Features | Flow control slider, intake regulator dial |
FAQ
How does the Fluval SK400 improve oxygen exchange in the aquarium?
The SK400 removes organic film from the water surface, allowing for better gas exchange. Clean water surfaces promote optimal oxygenation and light penetration, which supports fish and plant health.
Can the skimming intensity be adjusted?
Yes, the intake regulator dial allows users to control the skimming intensity according to their aquarium’s needs.
What is the flow rate of the Fluval SK400?
The flow rate is 105 gallons per hour.

Dominic Nash –
The SK400 has been running smoothly for three months. It effectively removes surface film without disturbing fish or plants. The flow control is easy to adjust and keeps water quality stable.
Colin Walsh –
I noticed a significant reduction in algae buildup after installing the skimmer. The sponge stays clean and the oxygen levels in the tank feel more balanced.
Rose Jackson –
Great for a planted tank. The fine filter sponge captures fine particles and the adjustable flow helps maintain a consistent surface clean-up.