13 x 20 Feet Liner 20 Mil, LDPE for Fish Stream Fountain Water Garden, Black Waterfall Backyard Koi Liner, Easy Cutting Underlayment Liners

I was nervous since this didn’t have any reviews, but the price for this size was worth the risk. We had to waste a lot on the 20 ft side since our pond is a circle, but the standard 10x13 size wouldn’t have been enough so had to size up. It seemed very thick and durable but still easy to work with and really easy to cut. I was nervous about this part of the pond installation, but it turned out to be a breeze. Would definitely buy again but hoping I don’t have to for a very long time!

Laying out a 20 foot square heavy mill plastic in a four deep pond with 1:1 sides by myself was a little tedious. The bottom of the pond is 9 feet square and the sloped sides measure almost 5 feet on the slope, so the liner is just barely big enough to have some extra to secure around the edges. I have constructed two 2x4 treated frames around the top - one under the plastic and one above the plastic. These are screwed together with construction screws to grip the edge of the liner all the way around and keep it in place. An inlet pipe lets water in from the roof drain collection system and a small weir on the other side allows for overflow.Time will tell how this holds up in central Montana wind and severe cold winters.The sole purpose is to collect rain runoff from the roof to provide for garden irrigation.

The pond liner holds water well but it's a little like plastic so it doesn't stretch you have to fold it on off shape's.

WARNING…..Please do not buy this liner as it is terrible. If I could give it a zero I would. We bought from this company and after 6 weeks we went outside to find all our fish at the bottom of the pond with no water. The water drained out during the night. These were real big koi worth about $800 to $1,000 each as they were so old. Shame on this company.Well we bought another liner and got down on our hands, and knees to check it good before using it. We found a ton of little marks that were turning into slits. We also found tons of little holes. We couldn’t believe it. We have had several ponds over 30 years so we have a lot of experience with ponds.

When the package comes dont be surprised if you find it nearly too heavy to lift ! Nice product.... all the way around .

The media could not be loaded.  I bought this to replace an existing liner that had a leak. This liner is thicker than I expected and I got it at a good price. It was hard to work with at first but once the sun heated it up it was fine. So far so good....no leaks and the fish are very happy!

Update: continues to leak. Water dropped 6 inches over night.Installed liner 2 weeks ago. Filled it last week. I'm currently waiting for my pond to drain itself and reveal where the hole(s) may be.

So far so good. No holes, more like a tarp then rubber liner. Was a little worried about putting a hole in it laying it down, it held up very well though. I am very happy with it. Bigger then I needed even after I expanded my pond a little and it’s great.