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Happybuy LLDPE Pond Liner 20x25 ft, Pond Liner 20 Mil, Fish Pond Liners for Waterfall, Pond and Fish Ponds

  • Based on 497 reviews
Condition: New
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$139.99 Why this price?
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This item is eligible for return within 30 days of receipt

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Availability: In Stock.
Fulfilled by LOVSHARE

Arrives Sep 25 – Sep 29
Order within 22 hours and 30 minutes
Available payment plans shown during checkout

Size: 20x25 ft


Features

  • LLDPE Material: The pond liner is made of LLDPE material, pro-environmentally, sunlight-proof, weather-proof. It can restrain the penetration of harmful substances into the pond and give your fish and plants a secure living environment.
  • 20 Mil Thickness: This small pond liner is strong enough to withstand extreme weather conditions, more durable, tear-proof, and puncture-proof. In addition, good waterproof performance can effectively retain the water in your pond.
  • Flexible & Pliable: The fish pond liner has good flexibility, easy to bend and fold. You can cut it in various shapes to fit all irregular surfaces(e.g., waterfalls). For better flexibility, you are recommended to lay the liner under the sun for 10 to 15 min before use.
  • Aging-proof & Durable: Our waterfall liner is designed with excellent durability, high tensile, and impact strength. The size of 20 ft x 25 ft is ideal for small ponds. The lifespan can live up to 50 years without any exposure, and it can also last for ten years under intense sunlight.
  • Wide Application: This large pond liner is a perfect choice for agricultural or home use, such as water garden, fish pond, backyard waterfall, golf course, artificial lake, riverway, aquaculture farm, sloping side, rooftop, etc.

Features

  • LLDPE Material: The pond liner is made of LLDPE material, pro-environmentally, sunlight-proof, weather-proof. It can restrain the penetration of harmful substances into the pond and give your fish and plants a secure living environment.
  • 20 Mil Thickness: This small pond liner is strong enough to withstand extreme weather conditions, more durable, tear-proof, and puncture-proof. In addition, good waterproof performance can effectively retain the water in your pond.
  • Flexible & Pliable: The fish pond liner has good flexibility, easy to bend and fold. You can cut it in various shapes to fit all irregular surfaces(e.g., waterfalls). For better flexibility, you are recommended to lay the liner under the sun for 10 to 15 min before use.
  • Aging-proof & Durable: Our waterfall liner is designed with excellent durability, high tensile, and impact strength. The size of 20 ft x 25 ft is ideal for small ponds. The lifespan can live up to 50 years without any exposure, and it can also last for ten years under intense sunlight.
  • Wide Application: This large pond liner is a perfect choice for agricultural or home use, such as water garden, fish pond, backyard waterfall, golf course, artificial lake, riverway, aquaculture farm, sloping side, rooftop, etc.

Product Dimensions: 26 x 26 x 6 inches


Item Weight: 42 pounds


Manufacturer: Happybuy


Country of Origin: China


Item model number: Happybuy LLDPE Pond Liner 20x25


Product Dimensions: 26 x 26 x 6 inches


Item Weight: 42 pounds


Manufacturer: Happybuy


Item model number: Happybuy LLDPE Pond Liner 20x25


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 25 – Sep 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Very thick
Size: 20x25 ft
Love it I feel confident that it will not be damaged by sticks or rocks that fall into fish pond
Reviewed in the United States on April 20, 2025 by trudy gilliam

  • Exceeded expections
Size: 20x25 ft
It is really good for the project.
Reviewed in the United States on May 9, 2025 by t mizzell

  • It works
Size: 15x20 ft
It's not very flexible and has folds. It is also expensive. I've had it in my pond for a couple of weeks now, and it is holding water. I will update you if it breaks.
Reviewed in the United States on April 22, 2024 by Maddie

  • Comes Filled with Pinholes
Size: 20x25 ft
I bought this liner a little over a year ago.. I constantly read these reviews before buying any products because I'm "thrifty" aka on a budget. Well avoid this product at all cost.. it has leaked since day 1 and not a slow leak it's been leaking atleast an inch a day until I gave up on trying to fix it. I have had so many pinhole sized leaks it's insane everytime we drain it and patch the hole we find out there is another one.. this weekend is attempt #100 to fix it we're completely emptying our pond and attempting to patch it once again... if that doesn't work I'll be going with a rubber liner. Again this liner comes riddled with holes so small they can't be seen on original inspection please beware. The work ive put into just repairing this liner is worth the extra price please BEWARE ... show more
Reviewed in the United States on June 11, 2025 by Bri

  • I was stunned
Size: 20x25 ft
I used this product to waterproof my open shed, and it was a cost-effective alternative to a new roof. I highly recommend it to anyone needing to waterproof a large area. It's a great product that works well.
Reviewed in the United States on June 20, 2024 by Christian U.

  • Worked fine but stiff
Size: 20x25 ft
Worked good just hard to form cause very stiff. Had to let sun hit it to form it a little easier.
Reviewed in the United States on August 16, 2022 by Corey H.

  • Too stiff
Size: 20x25 ft
Was not easy to work with, was expecting it to be more flexible but it’s extremely hard to lay out and the wrinkles were huge and doesn’t fold well and wrinkles are soo stuff they don’t lay down, instead stick straight out. It was very thick though so credit where it’s due but not for a rounded pond unless u cut it several places and tape it back together causing weak point in the water barrier. ... show more
Reviewed in the United States on June 15, 2023 by Chandra

  • Good price for the liner
Size: 20x25 ft
We have been using this for a couple years now Very happy with it
Reviewed in the United States on January 11, 2025 by John Wells

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