It did increase the flow somewhat. It is on the ampmaster, so not a lot of pressure to work with. If on a higher pressure rated pump it would certainly boost up more, but it was a good try to get additional flow in the tank, and it helps a bit.
"As the solution is pumped through an eductor's orifice, a low pressure area is created that acts to pull solution from behind the bell shape of the eductor and direct the solution out of the bell end. For each gallon of solution that is pumped through the eductor, three or four gallons of additional solution is circulated within the tank." If you want to read more about these see here: http://www.kthsales.com/website/vendors/Eductors/mixing_eductors.htm
Hope this explains things well enough, and here is a close up photo.