explaination
 

Can you fill us in on how the add on works for the maxijet? Does water flow make it turn? How much?

The Flo by Hydor, is a 360*rotating water deflector that can be attached to most powerheads(comes with 4 different attachment fittings). The unit sells for about $25 and has a two year guarantee. This should mix up the flow in my tank especially considering that the MJ1200 also crosses the path of my two returns which run via a SCWD. Also these units run like a dream, very smooth directional turns that would make you think it's got Swiss bearings instead of plastic gears!