Owners of large marine aquariums have to do regular water changes, monthly or more often, a messy, wet job that COULD be made much simpler. What I want invented is a "bi-directional in-line electrical water pump" with tubing on either end, that does NOT need to be submerged to work. Here's how I envision it: Step 1) Plug it in. Stick one end of the tubing in my tank and the other end in an empty 5-gal water container. Turn it on, it pumps the water out into the container. (Like siphoning...