The super simple addition of this directional flow deflector affords the NanoStream an impressive degree of flexibility in terms of the kind of flow it produces and the myriad of ways this outflow can be directed. The other thing that we really love about the use of this flow deflector in the new NanoStream pumps is that it creates water movement in a cross section which is beneficial to creating mass water movement through gyre-generating principles of which we are particularly fond. See also Maxspect Jump SK-800 Skimmer Review The image of a curveball comes to mind when we picture the how the flow exits the NanoStream 6040. The opportunities afforded by Tunze’s novel quarterspherical flow deflector was primarily intended to allow the NanoStream 6040 to be tucked behind aquarium rockwork, out of view, while simultaneously pushing water up and over or around the reef structure. The shroud covering the outflow of the NanoStream 6040 is half of a hemisphere (a quartersphere?) and this deflector can be rotated 360 degrees to direct the outflow where it is desired in the aquarium. Getting all of the moving parts to hug closer to the aquarium led to a pump design with an outflow that is essentially parallel to the aquarium glass but Tunze solved this issue by creating a new kind of flow deflector. Rather than having the pump motor mounted behind the propeller and jutting out into the aquarium, the guts of the NanoStream 6040 are located to the side of the rotor and it even has the first open stator design we’ve ever seen in an aquarium pump. With the NanoStream 6040 Tunze has packed more functionality than we’ve ever seen in a pump this size and they’ve really defined what it means to “think outside the box” with a unique asymmetrical design.

Nearly all propeller pumps released after the first Tunze Turbelle stream pumps followed its basic design of having a propeller mounted to a motor right behind it with the entire assembly having some degree of directionality. Tunze was the first company to produce a propeller pump for moving water in marine aquariums and they are redefining the category with the NanoStream 6040 pump. First announced just in time for InterZoo, the Tunze NanoStream 6040 is a controllable DC propeller pump with the entire pump assembly literally turned on its side. This neat little pump is basically identical to a smaller, more basic model called the NanoStream 6020 which is not controllable, cheaper and pushes about half as much flow compared to the NanoStream 6040’s rating of pushing up to 1,190 gallons per hour.

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