Druce, could you link to that pump? I'm not finding anything like that on Ebay. The gas powered pump I'm using now is a shore mounted centrifugal pump, so I'm familiar with the benefits of the centrifugal pump. What I'm trying to do is make this a simple as possible. I don't want to store water or electricity. I just want to pump directly into the drip lines using a direct feed without batteries while the sun is up. With a low-flow pump (2-3 gal/min), I can divide my garden into 4 zones, water 1 zone each day all day while the sun is up, and get just the right amount of water I need. The reason I don't want a submersible, is because I have to pull the intake periodically to clear the algae that grows in our pond. That seems like it would be harder to do with a pump on the end (though I could be wrong about that).