Hello gerry, i have a split-level garden at the back of my house with ten foot in the difference of the two. I have plans for a patio with a stream for the top section cascading down into a pond in the bottom garden but was wondering what are the costs of running such a set up ,are these pumps heavy on electricity as I have to pump the water 12 feet up vertically from the pond and a further 12 feet across to the starting point of the stream. BACKYARD
If you want a significant amount of water, it will cost more. Submersible pond pumps are rated from a few watts to about 2 kilowatts. 2 Kw delivers a lot of water, but if you have a back garden, you probably only need about 150 to 200 litres per minute to make a waterfall 600 mm wide.
Such a pump would be rated at about 200 watts or one-fifth of a kilowatt, and at current price of about 15 cent per Kw, it would cost 3 cent per hour to run, or about €5 per week round the clock.