Hi all
at work we're building a demo green roof and were thinking of having a solar pump to 'water' the roof periodically, showing how little runoff you get. The top of the roof will be about 1.7m off the floor, and we could have a reservoir from ground level up to about 1m. So we'd need a lift of at least 1m, and a timer would be a nice touch.
does anyone have any advice or recommendations?
sav