Hi, my current pond that I will be joining to this one is already around 200mm out of the ground as you can see in the pics. So I will be raising this pond to meet that one in height. I enjoy sitting around the pond so dont want a pond that is too high and that when sitting I cannot see into it.
I have dug 1.7m down, then with the 200mm lift I am looking at a total depth of 1.7m (this after the 200mm concrete floor)
Also, the width of the pond is currently 2.5m, I am going to remove the soil that you currently see in the pics, then expand to around 3.2m width and then this soil that I remove I will be using in veggie bags around the pond to get the 200mm lift.
Hope this makes sense....thanks again