Hydor Flo Rotating Water Deflector?

Hi;

Was wondering if anyone's had any experience with this product:

http://tinyurl.com/f8ste

The Hydor FLO rotating water deflector rotates 360 degrees driven by
the water flow of the filter being used, so no additional power source
is required. The FLO rotating water flow creates a natural and pleasant
wave effect which is beneficial to live plants and reef inhabitants and
leads to increased oxygenation. Adaptors are included which allow the
FLO rotating water deflector to be used with most aquarium filter and
water pump applications. For freshwater or marine aquariums. Ideal for
use with canister filters and powerheads. For use with devices with
flow rates of 80-310 gph.