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Cord Length (from transformer to controller): 6.35 meters (20.8 feet).Cord Length (from outlet to transformer): ~165 cm (~5.5 feet).Total Cord Length: 6.35 meters (20.8 feet).Propeller Diameter = 49mm (1.93 inches).Discharge diameter = 55mm (2.17 inches).Intake Circumference: 289mm (11.4 inches).Power consumption differs at various wattages – 18 watts on average 26 watts 24v per tunze’s website) Power Consumption: The tunze pump and controller operate on Direct Current at reduced voltage and is rated by Tunze at 62 watts (1.49 kWh per day).How do these claims hold up under scrutiny? Tunze makes many claims about the Wavebox – a pump producing ‘high speed’ currents while using little power, wave heights of 3 cm (1.18 inches) with oscillations corresponding ‘precisely’ to wave action seen on natural reefs. The box was too large to fit inside the rectangular aquarium so I used only the pump and controller – with profoundly different results from those originally seen. Almost two years later, I decided to try again. Even after weeks of trying to tweak the controller and timing of the waves, I failed to do so and considered the test a failure and abandoned use of the Wavebox. Since I had to build a frame of PVC pipe to hold the box in place, this positioning allowed the waves to pass behind the Wavebox, where they then formed an odd rebound (reflection) once striking the curved wall of the tub. In initial experiments, the Wavebox produced a lot of flow but failed to produce significant wave action (a subjective opinion) when used in a 100-gallon Rubber Maid™ tub. It is not that the product did not achieve results I would have expected based on tunze’s reputation – it was that the application was incorrect, although it would take a while to realize this fact. Other times, the testing protocol does not generate results worthy of publication, and this was my initial experience with the tunze

In some cases, the product performs so poorly that the manufacturer’s business fails before the possibility of publication. For a variety of reasons, not every report on products I purchase and test makes it to print.