I am in the process of building my waterfall. Do you have to use a mortar? I had bought waterfall foam but have been stacking rocks and they seem pretty sturdy. Maybe not for climbing on but I don't think my cat would knock them in if she stood on them. I would use the foam but I change my mind so much I'm sure I will want to change rocks around as time goes by. What did all of you do?
Thanks!
Eve
Waterfall Build Question
Mine are mostly stacked with some foam. Everything has held up really well ( 7 years). As long as the foundation ( dirt or whatever) won't shift or sink, a tight stack, with foam where needed, is sturdy even with our freeze and thaw cycles.
I've already put a few fish in the pond but might drop the water level to add some foam. I'm just not sure about rock placement yet. I already had my smallest sarassa trying to jump the waterfall like it was a trout:) I won't tell you how many times I've fished him out of the skimmer already...
Mine are just stacked. No foam or anything. Over the years, I have re arranged and re stacked rocks.