This is a continuation of this thread. The pond is done, however the existing waterfall is leaking and cannot not be repaired without a total rip out and re-do like the pond was. The homeowner (HO) wants to make it look a bit more natural and bigger/longer. I have taken some pictures and placed marker points on them for reference. Here is the existing structure I have to work with. Under "B" is where the waterfall starts. It is actually only an 1.25" line, no resevoir or anything, just straight out of a pipe under the lateral rock below "B". My plan is to start the waterfall (with a biofalls box like normal) behind rock "A" to the right of the large tree. There appears to be enough room between the major root flares to incorporate the box into the ground (keeping it low as possible). I will have to move rock "B" with some large pry bars and possibly a hydrualic ram. The gap between "A" + "B" is too narrow to leave it the way it is. There would be no way to hide the liner.