I'll second the March pump. It's easy to clean, self-priming and since the coupling is magnetic, you can throttle the output using a valve without damaging the pump.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk