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Got one yesterday and the sound is divine . . . it's a three tier rock formation effect and as soon as I switched it on Nero was over the moon . . . it's located on one side of the patio and is powered by a 12 volt pump which uses next to nothing in electricity . . . I might put a couple of goldfish in the bottom pool later.
That sounds lovely, Nero! Picture, please! There is nothing more soothing than listening to the sound of the water falling; my next door neighbor has one and I enjoy sitting on my porch and listening to it.