Wish the price hadn't gone up but that can be said about everything. Good material and not bad to work with once it's on the roof

I've bought Firestone branded EPDM liners before, for an in-ground pond. That was about 2.5-3 years ago now IIRC. I've had no issues with that yet, and I feel like I could have installed it better. Pretty much dug a big hole (7x13, 3 feet deep with integrated steps in one side) and dropped the liner in. I don't even think I used landscape fabric - and I had it.

Because of that experience, I wanted to buy the same product again. I didn't need it as large this time which obviously saved a lot of money. This time around, I built a fish tank in the corner of a greenhouse. I basically framed the tank with treated 2x4s, lined the inside of the frame with ~1/2" plywood, stapled the old landscape fabric I had to the top of the frame and allowed the strips of fabric to fall down the inside of the plywood shell. Then just came back with the liner and pushed it to the bottom. I started filling it with water to form the shape, put the folds in the best places I could get them, and trimmed it up and stapled it to the top of the frame as well with the exception of the front of the frame. I wanted a window in the front, so I bought a piece of acrylic and a tube of 3m 5200. I cut the window out of the liner, making sure not to cut too far. I trimmed it until it fit the hole I cut in the plywood almost perfectly. I set the acrylic panel up over the hole, and pre-drilled several holes for screws with rubber washers. Once it was drilled, I just surrounded each of the holes with 5200, and put a bead around the whole panel, and then screwed it into the holes I drilled in the liner, plywood, and studs. I let it cure for about a week before finishing filling the tank. It sealed up perfectly, and has been in use for several weeks now.

I also ran plastic bulkhead fittings through the side of the tank for the filter hoses. Those sealed up nicely as well as far as I can tell, although I guess a very slow leak wouldn't make itself apparent for months probably.

This is third time I've redone my waterfall in a year. The first 2 times I cheaped out and got a plastic based liner for about $100. The liners both got holes and were losing water within 2 months. This liner is rubber based and feels much sturdier. I'm hoping it will last for years to come.

My old pond liner gave up the ghost after a dozen years so I needed a replacement. This one has worked very well so far. It was fairly easy to install and is doing the job.

This has been an excellent product for me. It's reasonably priced and very heavy duty. I have a small pond, yet this size went on fairly easilty and I was able to cut off the excess (about 20%) without too much effort. So far it's solid. First time I've used a rubber liner, but this looks like it will last forever, as long as I don't step on it too much. The critters in my neighborhood have sharp claws, but I give this liner a fighting chance.