[lawnmowerman29]

Is it recommended to put liner under the waterfall? Should i start at the biofalls? Also if i am building a stone retaining wall that the waterfall will flow from, how do i use a liner when i am building from the bottom up? Or do i build the berm and than run the liner with the rocks on top?

 

[NickN]

Check out Aquascapes manual.Pretty informative...
http://www.aquascapedesigns.com/resources/index.shtml
Take care!

 

[GLAN]

You answered your own question with your last sentence.......

 

[WeatherMan]

Here is one I just installed I layed the liner then build the rock on top used spray foam to hold rocks in place and to have a berm on both sides