• 20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 1
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 2
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 3
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 4
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 5
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 6
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 7
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 8
  • 20 Mil Pond Liner 15x20 Ft HeavyDuty LLDPE Fish Pond Liner For Water Features Koi Ponds Backyard L 9
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20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping

20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping

$279.94
$279.94
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Returns

We accept returns within 30 days of delivery. Items must be unworn, unwashed, and returned with original tags attached.

Care Instructions

To preserve the beauty of your dress, we recommend gentle hand washing or dry cleaning. Do not bleach. Hang or lay flat to dry. Steam or iron on low heat if needed.

Shipping

Orders are processed within 1–3 business days.

  • Standard Shipping: 5–9 business days — $3.95
  • Express Shipping: 4–7 business days — $9.95

Delivery times are estimates and may vary depending on your location. Tracking information will be provided once your order has been shipped.

Create a safe, leak-proof habitat for fish and aquatic plants with the 20 Mil LLDPE Pond Liner. Designed for durability and flexibility, this 15x20 ft fish pond liner resists punctures, UV damage, and extreme weather, ensuring long-lasting performance for water gardens, koi ponds, and backyard waterfalls.

Ultra-Durable 20 Mil Thickness:

Unlike thinner liners that tear easily, this heavy-duty pond liner features a 20 Mil thickness, providing superior:

  • Puncture & tear resistance – Protects against roots, rocks, and sharp objects.

  • Waterproof barrier – Prevents leaks and maintains consistent water levels.

  • UV & weather resistance – Withstands sun exposure, freezing temps, and heavy rain.


Eco-Friendly LLDPE Material:

Made from flexible, non-toxic LLDPE, this pond liner for fish ponds is:

  • Safe for fish & plants – Blocks harmful chemicals from leaching into water.

  • Sunlight & aging-resistant – Lasts up to 50 years without degradation.

  • Easy to shape & install – Softens in sunlight for seamless fitting around curves and irregular surfaces.


Versatile for Any Water Feature:

Ideal for both home and agricultural use, this waterfall liner is perfect for:

  • Koi ponds & fish tanks

  • Backyard waterfalls & streams

  • Artificial lakes, golf courses & aquaculture farms

  • Rooftop gardens & sloping landscapes


Easy Installation & Maintenance:

For best results, lay the liner under sunlight for 10-15 minutes before installation to enhance flexibility. Trim to fit any shape—no special tools required!

Why Choose This Pond Liner?

  • 20 Mil thickness – Maximum durability
  • LLDPE material – Eco-friendly & long-lasting
  • 15x20 ft size – Ideal for small to medium ponds
  • 50-year lifespan – Unmatched longevity

Upgrade your water feature with the best-selling LLDPE pond liner—trusted by landscapers, pond builders, and DIY enthusiasts alike!

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20 Mil Pond Liner 15x20 ft,...
$279.94
$279.94
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Tools, Home & Hobby
20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE...
$279.94
$279.94

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  • E
    Emily R.
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    Verified Buyer
    Perfect for a summer wedding
    I wore this to my cousin's wedding and felt amazing all day. The fit was exactly as expected, and I received so many compliments. I ordered my usual size S.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 23 2
  • O
    Olivia H.
    US flag
    Verified Buyer
    Beautiful dress
    Really happy with this purchase. I only wish I had steamed it before trying it on because it arrived with a few wrinkles from shipping.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • S
    Sarah T.
    US flag
    Verified Buyer
    So flattering
    I have a hard time finding dresses that fit my waist properly, but this one was perfect. Very comfortable to wear for several hours.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • C
    Chloe W.
    US flag
    Verified Buyer
    Worth every dollar
    The quality surprised me. The material has a nice weight and doesn't feel see-through at all. I'll definitely order another style.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • A
    Amanda K.
    US flag
    Verified Buyer
    Engagement photo approved
    Bought this for our engagement photos and couldn't be happier. It looked beautiful in natural light and fit perfectly.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • N
    Nicole B.
    US flag
    Verified Buyer
    Runs slightly roomy
    I was between sizes and ordered the larger one. It still looked great, but I probably could have gone with my usual size.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • H
    Hannah C.
    US flag
    Verified Buyer
    Comfortable all evening
    Wore this to a formal dinner and didn't have to adjust it once. It stayed comfortable from start to finish.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • M
    Megan L.
    US flag
    Verified Buyer
    Love the quality
    Beautiful stitching and a really elegant design. It feels much more expensive than it actually is.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • R
    Rachel S.
    US flag
    Verified Buyer
    True to size
    I followed the size chart and ordered a Medium. It fit exactly the way I wanted.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • A
    Ashley D.
    US flag
    Verified Buyer
    Received so many compliments
    Everyone kept asking where I bought this dress. It's simple, elegant, and easy to accessorize.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • L
    Lauren P.
    US flag
    Verified Buyer
    Vacation favorite
    Packed this for my trip to Italy and wore it twice. It's lightweight, comfortable, and photographs beautifully.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • B
    Brittany G.
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    Verified Buyer
    Lovely dress
    The zipper was a little stiff the first time, but after wearing it once everything worked perfectly. Overall, I'm very happy.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0
  • K
    Kayla N.
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    Verified Buyer
    Helpful customer service
    I wasn't sure which size to buy, so I contacted support first. They recommended a Small, and it fit perfectly.
    20 Mil Pond Liner 15x20 ft, Heavy-Duty LLDPE Fish Pond Liner for Water Features, Koi Ponds & Backyard Landscaping     Was this helpful? 0 0

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