The bottom of my 30,000 gallon fish pond is full of sludge and fish s^&t. I want to try to make a venturi style sump pump. These pumps are extremely simple. They work by using a high pressure water jet to move a large volume of water at low pressure.
Here's a little bitty one:
I need design help. Specifically what size orifice should I try for the high pressure outlet. And where should the orifice be located. Also 4" ID of the tee is probably too large, what would be the best ID to use? Any other suggestions?
Karl