Dismantle the waterfall and clean off the cement. Re-install using what you have learned to make it better this time.

As a week has gone by with no feed back is it safe to assume that you consider me a smart arse? This is what happens when you go to school or apprentice to learn this stuff, it is painful and humiliating but it is part of the process. If is not right then you have to do it again. If you go to the Landscape Design forum you will see a thread called "What's missing in this picture?" down towards the end you will see sunshines pond and waterfall. The waterfall flows fast with a curtain of water falling over the top stone making it impossible to see what is behind it, would this be a simpler solution for you?

I'm not sure if this will help in your situation or not but on my pond and waterfall I had the running down like with a little stream, but I wasn't getting good sound, so I used a 1" pipe come out and I put a piece of ceder I brought back from the mountains under it for the water to fall on. It really makes a cool sound now. And I still feel it looks natural because most streams and rivers have logs and such as part of their natural environment.

Simple fix...go buy a roll of coconut fiber. Its the stuff that they put in the iron window boxes. Purchase it in roll form so its one long piece you can fit to the space. You can trap it under the water fall in a number of ways, or you can find a water safe glue to use. It lasts for a long time and gives a place for beneficial bacteria to grow.

{{gwi:287935}}

Many landscape or garden centers will have a roll on hand and you can purchase the length you want. If not...you may have to order your own. STILL cheaper than ripping up the water fall in my opinion (and based upon sweat equity)

HTH

Ronda

Could you lay some concrete in a sand mold on the ground and place rocks on it so the concrete holds them in place and then when dry prop the concreted rocks up where you want it to cover so it looks like rocks?