VEVOR Fountain Spillway 35x3.2x8.1 Inch, Pool Waterfall Fountain 17 Colors Led, Pool Water Fall Kit with Remote, Pool Spillway Solid Acrylic Pool Waterfall for Garden Pond, Swimming Pool, Square
do you need a pump for each water fall? I would like to install 3 of these units on a 10' x8' wall. also what is the size hole we need to have at the bottom of the pool to accommodate the water inlet/outlet to the pump or a pipe opening to the water/pool area?