thanks Don, kooks great, and yes to get 5x more flow you would need a high pressure pump, but the can increase the flow with a pump with less pressure, around 2-3x the flow, which IMO is better than nothing, and for a few bucks to make, you cant go wrong
actually it is an eductor, just not as fancy as the ones that you can buy
it draws water in as the pump is pushing it through the barb
remember these dont increase the pressure of the pump, they increase the volume, and the pump doesnt know its there (will not harm the pump)
TD