---
product_id: 209120538
title: "Pond Liner, 20 Mil 7 x 10 Feet Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall"
brand: "uwioff"
price: "S/.269"
currency: PEN
in_stock: true
reviews_count: 8
category: "Uwioff"
url: https://www.desertcart.pe/products/209120538-pond-liner-20-mil-7-x-10-feet-pond-liners
store_origin: PE
region: Peru
---

# 20 mil thickness for ultimate durability UV & puncture resistant for 10+ years Tool-free, easy installation Pond Liner, 20 Mil 7 x 10 Feet Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall

**Brand:** uwioff
**Price:** S/.269
**Availability:** ✅ In Stock

## Summary

> 🌿 Transform your outdoor oasis with durability and style — don’t let your garden fall behind!

## Quick Answers

- **What is this?** Pond Liner, 20 Mil 7 x 10 Feet Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall by uwioff
- **How much does it cost?** S/.269 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/209120538-pond-liner-20-mil-7-x-10-feet-pond-liners)

## Best For

- uwioff enthusiasts

## Why This Product

- Trusted uwioff brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Outdoor Essential:** Ideal for ponds, waterfalls, streams, and even innovative raised garden beds or self-watering planters.
- • **Effortless Setup, Zero Hassle:** Install your pond or water feature quickly with no tools required—perfect for busy professionals.
- • **Fish & Plant Safe, Eco-Friendly:** Made from premium HDPE, this liner is leak-proof and safe for koi, aquatic plants, and your ecosystem.
- • **Clean Water, Cleaner Maintenance:** Flat surface reduces soil buildup and prevents harmful contaminants, making pond cleaning a breeze.
- • **Built to Last, Designed to Impress:** 20 mil thick HDPE liner ensures unmatched durability and flexibility for creative pond or garden designs.

## Overview

The UWIOFF Pond Liner is a 7 x 10 feet, 20 mil thick black HDPE liner designed for small ponds up to 200 gallons. It offers UV and puncture resistance for over 10 years, ensuring a leak-proof, fish-safe environment. Lightweight yet ultra-durable, it installs easily without tools and doubles as a versatile liner for waterfalls, streams, and innovative garden projects.

## Description

desertcart.com : UWIOFF Pond Liner, 20 Mil 7 x 10 Feet Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall : Patio, Lawn & Garden

Review: An Unconventional But Perfect Choice - As a home gardener who has experimented with a lot of different methods, I've found that sometimes the best tool for the job isn't the one it was originally designed for. That's the case with the UWIOFF 10 x 13 FT Pond Liner. While it's marketed for ponds, it turned out to be the perfect material for building a large self-watering garden bed. My project required a liner that was durable, completely waterproof, and manageable to install in a confined space. The 20 Mil thickness of this liner was the key. It was thick enough that I wasn't worried about it getting punctured by tools or rocks, but still flexible enough to be folded and molded into the shape of the raised bed without a lot of struggle. I was able to get clean corners and edges, ensuring a tight seal for the water reservoir at the bottom of the bed. The generous 10 x 13-foot size gave me plenty of material to work with, allowing for a good overlap and a comfortable margin of error. The liner has held up perfectly. It contains the water effectively, and after an entire growing season, there are no leaks or signs of wear. The black color also helps absorb a little bit of heat, which is a bonus in my cooler climate. For anyone looking to create a large-scale self-watering system for their garden—whether it's a sub-irrigated planter or a wicking bed—I can't recommend this product enough. It's a reliable, heavy-duty solution that delivers on its promise of being completely waterproof and durable. Don't be afraid to think outside the box; this pond liner is a fantastic choice for your next garden project.
Review: Does the job well, and is inexpensive - Used this as an underlayment for waterfall. A little stiff, but not bad if left in sun for a while. Has held up great here in North Texas with hot summers, and crazy winters. Owned for 3 years, and no leaks.

## Features

- Size - 7 x 10 Feet Pond Liner is ideal for small ponds, up to 200 gallons of water; Easy installation, no tools required
- Thickness - Pond liner 20 mil, thick pond liners for outdoor ponds; Ultra-durable yet lightweight, easy to install, while flexible for a variety of creative designs
- Safe Material - Made of good quality HDPE, which is more leak-proof than LDPE liners. Our liner is UV and puncture resistant, can be used for more than 10 years; Safe for your fish and plant
- Easy to Clean - The koi pond liner provides a flat surface for your pond, reducing the soil accumulation. Also can effectively prevent harmful substances in the soil from penetrating into the pond to pollute the water, so that you can clean pond easily
- Multifunctional Use - Great outdoor pond liner for any backyard waterfalls, fish/koi ponds, and other water features; Can be used in different ways: Utilize the liner for raised garden beds, sub-irrigation planters, and other self-watering projects

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #6,191 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Water Garden & Pond Liners & Seals |
| Brand | UWIOFF |
| Color | Black |
| Customer Reviews | 4.4 out of 5 stars 2,058 Reviews |
| Material | High Density Polyethylene (HDPE) |
| Product Dimensions | 120"L x 84"W |
| Size | 7-Foot by 10-Foot |
| Style | Compact |

## Product Details

- **Brand:** UWIOFF
- **Color:** Black
- **Material:** High Density Polyethylene (HDPE)
- **Product Dimensions:** 120"L x 84"W
- **Size:** 7-Foot by 10-Foot

## Images

![Pond Liner, 20 Mil 7 x 10 Feet Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall - Image 1](https://m.media-amazon.com/images/I/613yKb62GnL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Did anyone else receive a their pond liner with little pits or pin holes? Does this matter in the liner's ability to retain water?**
A: I didn’t notice a pin hole, but there must be because there is a slow leak I can’t find

**Q: Is this safe for lining raised garden beds for growing food?**
A: That’s exactly what I’m using it for. After so much safety research, I opted to use it. Best rated for food grade is PETE, followed by HDPE.

**Q: It says you can seam multiple liners together. How would you seam them together?**
A: Using pond seam tape. It's double sided and works well.

**Q: Is seaming accomplished using heat gun weld?**
A: It is better to use pond liner seam tape to accomplish seaming.

## Customer Reviews

### ⭐⭐⭐⭐⭐ An Unconventional But Perfect Choice
*by V***Y on September 24, 2025*

As a home gardener who has experimented with a lot of different methods, I've found that sometimes the best tool for the job isn't the one it was originally designed for. That's the case with the UWIOFF 10 x 13 FT Pond Liner. While it's marketed for ponds, it turned out to be the perfect material for building a large self-watering garden bed. My project required a liner that was durable, completely waterproof, and manageable to install in a confined space. The 20 Mil thickness of this liner was the key. It was thick enough that I wasn't worried about it getting punctured by tools or rocks, but still flexible enough to be folded and molded into the shape of the raised bed without a lot of struggle. I was able to get clean corners and edges, ensuring a tight seal for the water reservoir at the bottom of the bed. The generous 10 x 13-foot size gave me plenty of material to work with, allowing for a good overlap and a comfortable margin of error. The liner has held up perfectly. It contains the water effectively, and after an entire growing season, there are no leaks or signs of wear. The black color also helps absorb a little bit of heat, which is a bonus in my cooler climate. For anyone looking to create a large-scale self-watering system for their garden—whether it's a sub-irrigated planter or a wicking bed—I can't recommend this product enough. It's a reliable, heavy-duty solution that delivers on its promise of being completely waterproof and durable. Don't be afraid to think outside the box; this pond liner is a fantastic choice for your next garden project.

### ⭐⭐⭐⭐⭐ Does the job well, and is inexpensive
*by J***X on January 6, 2026*

Used this as an underlayment for waterfall. A little stiff, but not bad if left in sun for a while. Has held up great here in North Texas with hot summers, and crazy winters. Owned for 3 years, and no leaks.

### ⭐⭐⭐⭐⭐ Multifunctional Item!
*by M***6 on December 23, 2025*

I used this to line my raised beds on my balcony. It went above and beyond my expectations. It is incredibly strong and heavy so I knew the quality was high. It did a great job at doubling as a raised bed liner. It took a staple gun just to make it stay in the wood and it never budged. It protected the wood of the beds as the water just rolled off of it right into the soil. It was very easy to use after measuring the length and width. Will definitely recommend this product to anyone who wants to take the route I did.

## Frequently Bought Together

- UWIOFF Pond Liner, 20 Mil 7 x 10 Feet Pond Liners for Outdoor Ponds, Black LDPE Fish Pond Liner for Small Ponds, Streams Fountains and Garden Waterfall
- Nashua 3 in x 5 yd Aqua-Seal Waterproof Tape in Black
- TotalPond Waterfall Foam Sealant

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-01-29*