The fill is at the bottom left. The pump is about 30' from it inside the building The fill. i took the copper tube out so as to not impede the fill in any way. Not a great pic but looking up from the bottom On the other side of that upper walkway is this fountain Here it is from the front of the building. The piping circulates through the building . Dumps into the upper fountain and tees off to the waterfall above the three ponds. The fountain overflow adds to the waterfall water. Beau watching a 1000 8-9" trout being dumped into my little fishing reservoir. What kind of fish is this?