I'm just installing the liner on a 15 x 23 ft pond, about 4ft deep. I'm new to this and I'm still doing my homework. What type of filtration, pumps, plumbing for waterfalls, etc. It's going to be fun though. The only bad part is it isn't my pond, but I can go swimming in it anytime I want.
I'll try to post some pics as I go, if anyone is interested.