I was given a solar pump which floated. The water jet was about the same as a little boy weeing
Good luck with your pond - ours was dug out of solid rock and needed machinery but it's lovely now, and all that work soon fades into the past. Our frogspawn hatched a few days ago and now loads of little black wrigglers are eating the pile of spawn which was killed by the ice just after it was laid. The king cups are just starting to flower and new water lily leaves are emerging. Half our Koi were killed in the winter, but it's lovely seeing the remaining five out and about again. I found three minnows which seemed to have appeared from nowhere, until I remembered my youngest grandson had been doing something secretive just after he'd been gold panning last year - he'd caught the minnows and popped them into our pond!
You'll have endless enjoyment from your pond - everyone should have one