Algodoo

Thanks for telling us the controls..

And no, it's not ingenious, people have been making water leak fixes and didn't even announce them in their uploads..

controls are: right to operate main pump, up to operate backup system and down to stop everything. oh an poornation, I downloaded some pumps and what I saw? most of thems leak at least a little and the only leak fixes I saw are invisible blocks that only collide with water, wich is in my mind just some sort of cheating.maybe I missed the good pumps... if you have one to show me link it

its so easy!!! make a box on the pump and make it only collide with water and vola! a pump that desn't leak!