Firestone PondGard 45 Mil 20 x 25-Feet EPDM Pond Liner

I purchased the 50 Mil approximately 8 years ago Firestone is the best choice for worried free issue Never leaked /tough and last for years . No matter the weather . Full sun . I am more worried about my concrete pool leaking ‘ then my koi pond . If building a pond and you want worry free from leaks . Buy Firestone .

I bought this liner for my property to make a small retention pond mainly for wildlife and watering a remote food plot/garden. First, it was exactly what the description said. Made in USA, EPDM, and the exact specs as far as measurement and thickness. You can try other liners like I have many times from big box stores or whatever that state their EPDM and UV resistant and so on, but this liner honestly puts them to shame. I installed it per their guidelines with the bio-barrier underlayment and haven't had any problems. I even had 2 relatively large limbs break off of a cottonwood next to the pond and drop directly on the liner. I was worried about a puncture because the water is only 2ft deep at most where the limb impacted. Not even a scratch on the liner. Only word of advice is pay attention to description. Some larger sized liners and shipped in two pieces due to the weight. You'll have to seal a seam. As long as you do and use what they recommend, this stuff is pretty durable and forgiving to work with, just make sure you put in the work on smooth soil, and don't skip the underlayment (lose warranty if you don't use). Great quality and made in USA.

Going strong after 4 years with zero issues. It should be good for 20. We'll see! So far I'd recommend it and would buy again.

I can publish a book on how not to build a KOI pond, but the one thing that I strongly emphasize on doing is 1 Measure you pond correctly, then do it again and again. 2ndly is you definitely want this liner. It is thick heavy-duty and an absolute Pain In the A** to work with. Especially 20x25. I decided to build this amazing raised KOI pond in sort of a dead zone in our back yard.10 feet wide, 12 feet long and 3 to 6 feet deep along with a built upper waterfall tank. Close to 7000 gallons +/-. Everything went well the 1st time around that is until I realized the 1st line was too short(20×20) after the fact. I did not take into account all the folding and how it actually shrinks the size you have (which is already short) I thought since the issues would be high enough up that some good gorilla water tape and such would be a good fix, well it wasn't. After a couple weeks a corner seem split and well it was all down hill from there! After realizing my very $$$ mistake. I had to seriously rethink my pond! That the summer heat had already started and working in 110 Temps is 1 thing working with a big black liner something else. So after a couple months I decided to tear out the 1st liner, I then ordered the correct size based on valuable knowledge from a pond company on how to measure correctly, I had no idea you needed to add so much to your measurements Especially for a raised pond. They highly suggest and I definitely agree that at a min you want the liner to over hang at lest 2 feet on a raised pond to allow for folding corners and settling of the liner when filled. Then you can trim the excess, which I was shocked even at 20x25 the 2nd go around I ended up with 12 inches of overhang after filling and letting it set for a week. Originally there was a good 2+ feet. But it is now up and going, lots more plans to beautify it in the coming months. As you can see the walls are cinder blocks far from smooth, but I did re purpose the old liner to place on the walls for added protection. Do not use any other liners that a .45 rubber liner. The others are nothing more than tarps. I am definitely happy with the product, just have a few people to help you and open it up and position it the way you want to use it. Unfold all the packing folds prior to installing it and you will be a happier person

I put a pond in my backyard. This is a durable pond liner. Be aware, it is very heavy. I used a dolly just to get it in my backyard.

I purchased the 20x25 foot liner for my diy pool. I was a bit intimidated by numerous reviews which mentioned it being a job for multiple men given the weight and difficulty in handling. Now that my project is completed I just have to laugh. I’m a 5’2” 120 lb woman and I got it from the delivery truck into a 5 foot deep hole, unboxed, laid into position and was filling it with water within an hour. If you have common sense, it’s really not difficult. It is incredibly durable, flexible and I have no doubt it will last for years to come. I was able to cut holes for the inlets with ease and no tearing occurred. I can’t say enough wonderful things about this liner! Amazing product!

The liner was of a good quality. Reason for a 4 instead of five was there were factory markings in white on one side so I had to reverse the liner. Should be labeled inner/ outer

We ordered this liner in July 2019. We have had it for almost 3 years. It is so thick, durable and yet flexible that we added a wet land for our plants on the edge inside the pond. We also added two steps down to the deep area of the pond. It is also safe for plant and fish, we had 15 baby Koi born last year. Our dogs swim in it and no rips or tears so far. It was worth the effort and money. We al, pets, plants, pollinators, frogs, and humans enjoy it all year long.