Jecod SOW-8 Wavemaker Review

The Jecod SOW-8 is a compact sine-wave wavemaker with adjustable output of roughly 500 to 8,500 litres per hour. It offers eight power levels, several flow patterns and wireless synchronisation with another compatible controller.

Setup and controller

The pump body is small enough not to dominate the display, and the magnetic mount is reassuringly strong. Once positioned, it stays exactly where it is placed without gradually moving or pointing towards the sand.

The impeller is well recessed behind the housing. The openings still allow plenty of water through but make it very difficult for a fish to reach the moving parts, which is reassuring in a busy reef tank.

The controller is considerably less convincing. There is no proper screen or descriptive display, only LED buttons with labels such as W1, W2, H and C. The meaning is not obvious without the instructions, and the interface feels outdated compared with modern aquarium controllers. It works, but changing modes involves more trial and error than it should.

Flow and noise

For its size, the SOW-8 moves an enormous amount of water. In my D-D Reef-Pro 900, the output is arguably too powerful and too concentrated on anything beyond the lowest few settings. Turning it up quickly creates more force than the corals and sand bed need rather than a gentle, broad movement across the aquarium.

That power does have another use. I mix new saltwater in a 50-litre container, where the SOW-8 moves a high volume of water and dissolves salt noticeably faster than a small circulation pump. It is arguably better suited to this job than it is to my display tank.

The high-pitched whine

My biggest problem is an intermittent high-pitched whine at lower speeds. It comes and goes seemingly at random and has been present since the first day, so it does not appear to be caused by dirt or wear.

It may disappear into the ordinary background noise of a family living room. My aquarium is in my office beside the desk where I work all day, and in that setting the pitch is difficult to ignore. A wavemaker can be objectively quiet in terms of volume while still being irritating because of the character of its sound, and that is exactly the problem here.

Maintenance and durability

The guard and impeller are easy to access, and soaking the wet side removes the calcium deposits that gradually reduce output. The strong magnet and protective housing have held up well. Unfortunately, cleaning does not solve the occasional whine because it has been a characteristic of this unit from new.

Final verdict

There is no shortage of performance here. The SOW-8 is powerful, securely mounted and well protected, and it is superb for mixing a fresh batch of saltwater. As a display-tank wavemaker, however, its concentrated output is difficult to use in my Reef-Pro 900 and the unpredictable high-pitched whine is too irritating in a quiet office.

The confusing controller compounds the problem. In a noisier family room the whine may go unnoticed, but based on my experience I would choose a broader, quieter pump for a tank positioned near a desk or seating area.