My personal choice for pond liner is EPDM rubber. It’s what Ive used on all my personal ponds.
I have also used HDPE, that was on my grey water wetland. I constructed that over 10 years ago and it’s still going strong.
If you are going to construct an ecosystem pond with rocks and pebble I would certainly stick with EPDM rubber. I’ve put two links below for EPDM rubber.
HDPE and LLDPE are more rigid, but I think they are a perfectly fine choice for a small fish pond, with no rock and pebble.
You might also like to view geotextile underlayment to protect your liner.
Some of the links to the products on this page may be affiliate links. That means I may receive a small commission at no extra cost to you.
There’s a video at the bottom of the page where I talk about the different choices of pond liner.
![](https://ozponds.com/wp-content/uploads/2024/07/Pond-liner.jpeg)
Firestone/ LifeGuard EPDM Pond Liner
- Highest quality
- Highly durable
- Used by most professionals
- 45 Mil
- Available in many sizes
- Easy to repair and join
- UV resistant
![](https://ozponds.com/wp-content/uploads/2024/07/IMG_63485D2990B4-1.jpeg)
VEVOR EPDM Pond Liner
- Cheaper
- Highly durable
- 45 Mil
- Available in many sizes
- Easy to repair and join
- UV resistant
![](https://ozponds.com/wp-content/uploads/2024/07/IMG_1970B706F9C9-1.jpeg)
HDPE/ LLDPE Pond Liner
- Cheaper again
- Highly durable
- Tear and puncture resistant
- Available in many sizes