Water Underfall?

[koiguy1969]

or LOWES has it... probably any big box home and garden. or even your local nursery

 

[oldmarine]

I was at Lowes yesterday, and they had several cans of the black waterfall foam sealer for just under $13.00 each.

 

[27goldfish]

I personally, would also get rid of the "catch pond" behind your second rock. I would also use the black spray foam. That stuff is very handy!!!! My waterfall just has a spill way and two rocks as the falls.Here is an old image:

http://s160.photobucket.com/albums/t181/blackabbydog/?action=view&current=Picture.jpg

Also, for that distance, a bigger pump will only help you out. What size do you have in there now? I noticed, after "most of them will probably shut it off" , that it looked like you were doing this with a garden hose. You may find that higher gph will actually help you achieve what you are looking for.

 

[DrDave]

check Home Depot before you order. Lots of times they have it in their pond/pool section.

The nice thing about Home Depot is you can return unused cans. So it may cost more per can but you get back what you don't use.