Sinimaka Pond Liner 16 x 20 Ft, HDPE Durable Pond Liners for Outdoor Ponds, Pond Liners for Fish, Koi, Water Garden, Waterfall, Fountain
Condition: New
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 10 left in stock, order soon!
Arrives
Saturday, May 9
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Size: 16.5 FT x 20 FT
Features
- Safety Material - Constructed from high-quality HDPE material and free from plasticizers, our 16.5 x 20 Ft pond liner provide a safe environment for your fish and plants, ensuring durability for long-term use in outdoor ponds. (Please double check the size before purchase)
- Hold Water Well - The pond liner is waterproof and leak-proof, effectively retaining water and preventing soil dirt from entering the pond. With high puncture and tear resistance, it prevents deformation and cracking, establishing a secure haven for your fish and plants.
- Easy to Work with - The black liner is flexible and soft, allowing it to bend and fold freely in corners and making it easy to cut to fit almost any pond shape. With excellent ductility, it can withstand high-impact water forces without cracking. Simplifies your installation process, making it effortless.
- Durable & Long-Lasting - The outdoor pond liner exhibits high resistance to heat, cold, corrosion, and UV, ensuring durability in harsh summer or winter conditions. Warm Tips: You can prolong the pond lifespan by adding a layer of old carpet or sand before laying the pond liner.
- Wide Application - HDPE pond liner boasts waterproof and leak-proof properties, making it ideal for koi, fish, garden fountains, backyard waterfalls, cisterns, and other water features. Its versatility extends to planter boxes, roof coverings, use as tarps, etc. An economical and practical option for gardeners.
- Facing Any Issues? - Dear customers, your satisfaction is our priority; please let me know if you need assistance.
Package Dimensions: 14.13 x 13.82 x 7.52 inches
Item Weight: 13.13 pounds
Manufacturer: Sinimaka
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, May 9
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 16.5 FT x 20 FT
Exactly what I wanted
Reviewed in the United States on April 14, 2026 by Gayebird
Size: 20 FT x 26 FT
it said puncture resistance and as soon as we laid it out in our pond there were holes! it rips easy and is not in fact puncture resistant would not recommend purchasing
Reviewed in the United States on April 20, 2026 by mariah
Size: 20 FT x 20 FT
Couple years in and this liner is still holding up great. Was difficult to install in my oddly shaped pond, but I think that was more of a ME issue.
Reviewed in the United States on September 20, 2025 by Michael M.
Size: 16.5 FT x 20 FT
I got this liner to put in my pond, it’s heavy and seems thick but be careful bc adding your rocks and cinder block will scratch it up. Fortunately my rocks scratched on the outside where it will not leak. So far so good😁
Reviewed in the United States on October 9, 2024 by Melissa Floyd
Size: 20 FT x 33 FT
Liner is way to thin for my koi pond. I can't count the amount of holes i have had to patch
Reviewed in the United States on September 26, 2025 by joy poole
Size: 16.5 FT x 20 FT
This product was exactly as advertised. We did just like suggested and put in sun for a little while. This loosened is up enough to maneuver a little easier to fit in the pond we dug in the back yard.
Reviewed in the United States on October 24, 2024 by ks
Size: 16.5 FT x 20 FT
Durable? What a lie. Forget all the adjectives on site and on the package, you'd be better off throwing plastic garbage bags in your pond and hope for the best. The incredible amount of energy and time spend preparing the pond revamp had to be put on hold because of this substandard joke of a product. We were so excited, having recieved the liner yesterday in time to complete our mission. Not a pebble was involved, certainly nothing that could damage or puncture a liner, and with perfect preparation and wanting to be ready to fill the pond the next day, the liner was opened up and placed at the ready for what was to be our last day where the liner gets spread, delicately smoothed out as the water fills the pond. Nope. Not only a full-on hole in the liner appearing in the first two minutes, but a slit ready to open up as we tried to re-shape the liner accordingly. We already had doubts on its arrival as to its thin-ness, and lightness of weight, but went ahead in good faith thinking that a Canadian (I believe) product would have integrity. Do not buy this piece of cheap junk. To have waited for this to arrive and attempt to finish our pond and find that hardly 5 minutes have passed before a puncture appears, despite the gentlest of procedures, makes me so angry as personally time is an issue here and now I'm having to help my friend do this next week with hopefully a better rival product, and get it done and dusted once and for all. These guys should pull this product and I expect full reimbursement for it monetarily and my wasted time to be paid for. So annoying - STAY AWAY AND DO NOT BUY THIS RUBBISH.
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Reviewed in the United States on October 6, 2024 by Gregg Masuak
Size: 26 FT x 33 FT
This liner has been perfect for our backyard pond !
Reviewed in the United States on February 23, 2025 by Amazon Customer