This was part of an overall pool, spa, water runnel project. To do the raised wall w/ glass tile and the floating steps in the front, we would estimate about 15k

Hi ...I am Priyanka. I am in the process of renovating my house. I am trying to do a water feature similar to the one here. Where I am getting stuck is the height of the wall is 24ft. I do not want to take the waterfall from the top of the wall but from 18 ft height. Also it is not possible for me to take the trough or reservoir behind the wall as it someone else's space on the other side. now kindly advise me how do I go about it. I shall be obliged. Thanks n regards.

you have to put it in front of the wall and run your plumbing inside the wall

Mr. Terrell thanks for responding. I am thinking of cutting a horizontal slit in the wall, then have a stainless steel trough fixed there (which should be in a G section - but don't know if that shape is available), with the open section of the G towards the wall. Run the plumbing to both / one side of the trough, which when gets filled with water will overflow to form the waterfall. I have purchased granite tiles - chipped effect - to create the ripple effect. The height of the water feature is 18 ft and width is 5ft.
1. Kindly let know if I am on the right track.
2. What kind of a pump should I install for this water feature.
3. Do I need to use any kind of a filter.
Hope to receive your advise. Thanks n regards. Wish you Merry Xmas!!