The pump I had for the previous pond and waterfall is not adequate for this one, so another has been ordered. While I wait for it to arrive, I have tried sealing up the leaks with spray foam made specially for waterfalls. I need to move some rocks around to camouflage the black foam that shows here and there.
I was able to get the pond plants put in place and it will be interesting to see if they grow. I hope to post another picture after I get the new pump installed.