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Pond Liner(914)
KFFKFF Flexible EPDM Pond Liner, 15 x 20 ft, 45 Mil Thickness, Durable Material for Fish Ponds, Water Features, Waterfalls, Fountains, and Gardens, Black $259.99

KFFKFF Flexible EPDM Pond Liner, 15 x 20 ft, 45 Mil Thickness, Durable Material for Fish Ponds, Water Features, Waterfalls, Fountains, and Gardens, Black
VEVOR LLDPE Pond Liner Pond Liners 20x25ft 20 Mil Fish Liner Fish Pond Liner For Pond From $70.24

VEVOR LLDPE Pond Liner Pond Liners 20x25ft 20 Mil Fish Liner Fish Pond Liner For Pond
Best seller Pond Liner,Brochao 9.8x13ft HDPE Pond Skins,Fish Pond Liners PVC Membrane for Outdoor Gardens Patio Pool Water Fountain Waterfall Landscaping From $25.99

Pond Liner,Brochao 9.8x13ft HDPE Pond Skins,Fish Pond Liners PVC Membrane for Outdoor Gardens Patio Pool Water Fountain Waterfall Landscaping
VEVOR Pond Liner Fish Liner 10 x 15 ft 45 Mil EPDM Easy Cutting Underlayment From $33.22

VEVOR Pond Liner Fish Liner 10 x 15 ft 45 Mil EPDM Easy Cutting Underlayment
Rollback 10x10 ft PVC Pond Liner with 4.7 Mil Thickness Waterfall Fish Pond Liner, Black From $16.19

10x10 ft PVC Pond Liner with 4.7 Mil Thickness Waterfall Fish Pond Liner, Black
SUSUZI Pond Liner 10 Mil 33 x 13ft HDPE Pond Liners for Outdoor Ponds 430sq. ft Pond Underlayment Flexible Pond Skin From $22.99

SUSUZI Pond Liner 10 Mil 33 x 13ft HDPE Pond Liners for Outdoor Ponds 430sq. ft Pond Underlayment Flexible Pond Skin
Overall pick Pond Liner,6.6 x 10ft Pond Liners for Outdoor Ponds,Teencool 10 Mil HDPE Fish Pond Liners Skins $23.99

Pond Liner,6.6 x 10ft Pond Liners for Outdoor Ponds,Teencool 10 Mil HDPE Fish Pond Liners Skins
Deal 7x7 FT Pond Liner 8Mil, Heavy Duty PVCWaterproof Liner for Garden Ponds, Fish Ponds, Koi Ponds, Waterfalls & Fountains, Tear Resistant, Black From $16.99

7x7 FT Pond Liner 8Mil, Heavy Duty PVCWaterproof Liner for Garden Ponds, Fish Ponds, Koi Ponds, Waterfalls & Fountains, Tear Resistant, Black
Best seller Pond Liner,Brochao 9.8x13ft HDPE Pond Skins,Fish Pond Liners PVC Membrane for Outdoor Gardens Patio Pool Water Fountain Waterfall Landscaping From $25.99

Pond Liner,Brochao 9.8x13ft HDPE Pond Skins,Fish Pond Liners PVC Membrane for Outdoor Gardens Patio Pool Water Fountain Waterfall Landscaping
Samovi Pond Liner, 20 Mil Pond Liners for Outdoor Ponds, HDPE Pond Liner Easy Cutting Puncture Resistant, Pond Liners for Water Garden Fountain Waterfall, Koi Fish Aquaculture Pond, 6.8 x 9.8 FT $24.99 Was $32.99

Samovi Pond Liner, 20 Mil Pond Liners for Outdoor Ponds, HDPE Pond Liner Easy Cutting Puncture Resistant, Pond Liners for Water Garden Fountain Waterfall, Koi Fish Aquaculture Pond, 6.8 x 9.8 FT
Overall pick Pond Liner,6.6 x 10ft Pond Liners for Outdoor Ponds,Teencool 10 Mil HDPE Fish Pond Liners Skins $23.99

Pond Liner,6.6 x 10ft Pond Liners for Outdoor Ponds,Teencool 10 Mil HDPE Fish Pond Liners Skins
Anjon LifeGuard 45-Mil EPDM Pond Liner with Underlayment, 15 ft. x 20 ft. From $45.00

Anjon LifeGuard 45-Mil EPDM Pond Liner with Underlayment, 15 ft. x 20 ft.
Algreen Pond Liner Avonlea - 33 gal - Rigid Plastic Base $120.00 18.2 ¢/ml

Algreen Pond Liner Avonlea - 33 gal - Rigid Plastic Base
Best seller 10x10 ft Pond Liner with 20 Mil Thickness PVC Pond Skins Waterfall Fish Pond Liner for Fish Koi Pond Streams Fountains Garden Pool, Black From $28.99

10x10 ft Pond Liner with 20 Mil Thickness PVC Pond Skins Waterfall Fish Pond Liner for Fish Koi Pond Streams Fountains Garden Pool, Black
Clearance HDPE Fish Pond Liner, Heavy Duty Anti-Leak Geomembrane for Outdoor Pond Lake Stream, Garden Water Storage Lining, Slope Protection Fabric $6.99 Was $9.99

HDPE Fish Pond Liner, Heavy Duty Anti-Leak Geomembrane for Outdoor Pond Lake Stream, Garden Water Storage Lining, Slope Protection Fabric
Durable Fish Pond Liners Waterpool Gardens Pools Aquaculture Membrane- Available in variety size

Durable Fish Pond Liners Waterpool Gardens Pools Aquaculture Membrane- Available in variety size
Clearance! Pond Liner,79" Pond Liners for Outdoor Ponds, Black LDPE Fish Pond Liner for Small Ponds, Streams Fountains and Garden Waterfall $11.09 Was $13.47

Clearance! Pond Liner,79" Pond Liners for Outdoor Ponds, Black LDPE Fish Pond Liner for Small Ponds, Streams Fountains and Garden Waterfall
KFFKFF Pond Liner Fish Liner 10 x 13 ft 20 Mil LLDPE Easy Cutting Underlayment From $35.99

KFFKFF Pond Liner Fish Liner 10 x 13 ft 20 Mil LLDPE Easy Cutting Underlayment
Thick Black Plastic Sheeting Waterproof Sheet for Fish Ponds Outside Water Reservoir Fresh Water Tank Pond Liner Plastic Tub $4.89

Thick Black Plastic Sheeting Waterproof Sheet for Fish Ponds Outside Water Reservoir Fresh Water Tank Pond Liner Plastic Tub
Pond Liner, 3.2 x 3.2 Ft Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall $5.99

Pond Liner, 3.2 x 3.2 Ft Pond Liners for Outdoor Ponds, Black HDPE Fish Pond Liner for Koi Ponds, Streams Fountains and Garden Waterfall
Rollback 13x13ft PVC Pond Liner with 4.7 Mil Thickness Waterfall Fish Pond Liner, Black From $16.19

13x13ft PVC Pond Liner with 4.7 Mil Thickness Waterfall Fish Pond Liner, Black
Deal 7x7 FT Pond Liner 8Mil, Heavy Duty PVCWaterproof Liner for Garden Ponds, Fish Ponds, Koi Ponds, Waterfalls & Fountains, Tear Resistant, Black From $16.99

7x7 FT Pond Liner 8Mil, Heavy Duty PVCWaterproof Liner for Garden Ponds, Fish Ponds, Koi Ponds, Waterfalls & Fountains, Tear Resistant, Black
Anjon LifeGuard 45-Mil EPDM Pond Liner with Underlayment, 20 ft. x 25 ft. From $45.00

Anjon LifeGuard 45-Mil EPDM Pond Liner with Underlayment, 20 ft. x 25 ft.
Wisykoke 15x20 Ft Pond Liner for Outdoor Ponds, HDPE 20 Mil Koi Fish Pool Liner for Fish, Duck Garden Raised Bed, Black $62.72

Wisykoke 15x20 Ft Pond Liner for Outdoor Ponds, HDPE 20 Mil Koi Fish Pool Liner for Fish, Duck Garden Raised Bed, Black
labwork 20x20ft 20 mil Pond Liners For Outdoor Ponds UV Resistant Pond HDPE Liner Black $68.22

labwork 20x20ft 20 mil Pond Liners For Outdoor Ponds UV Resistant Pond HDPE Liner Black
Black HDPE Pond Liner Pond Liners 20 Mil Waterproof Fish Liner For Water Garden From $37.22

Black HDPE Pond Liner Pond Liners 20 Mil Waterproof Fish Liner For Water Garden
Fish Pond Liner Heavy Duty HDPE Geomembrane Waterproof Garden Pool Liner 8 mil Thickness 3x3 Feet for Landscaping $4.99

Fish Pond Liner Heavy Duty HDPE Geomembrane Waterproof Garden Pool Liner 8 mil Thickness 3x3 Feet for Landscaping
VEVOR Pond Liner Fish Liner 10 x 13 ft 20 Mil LLDPE Easy Cutting Underlayment From $33.22

VEVOR Pond Liner Fish Liner 10 x 13 ft 20 Mil LLDPE Easy Cutting Underlayment
Pond Liner, 7 x 10 ft Reinforced UV Resistant Black HDPE, 25 Mil Equivalent for Outdoor Ponds, Koi Fish Ponds, Garden Fountains, Stream Waterfalls From $24.99

Pond Liner, 7 x 10 ft Reinforced UV Resistant Black HDPE, 25 Mil Equivalent for Outdoor Ponds, Koi Fish Ponds, Garden Fountains, Stream Waterfalls
Historyli 20x25 FT Pond Liner, 20 Mil Thick Pliable LLDPE Material, UV Resistant for Water Gardens, Black

Historyli 20x25 FT Pond Liner, 20 Mil Thick Pliable LLDPE Material, UV Resistant for Water Gardens, Black
Black HDPE Pond Liner Pond Liners 20 Mil Waterproof Fish Liner For Water Garden From $37.22

Black HDPE Pond Liner Pond Liners 20 Mil Waterproof Fish Liner For Water Garden
7x10 ft Pond Liner with 20 Mil Thickness PVC Pond Skins Waterfall Fish Pond Liner for Fish Koi Pond Streams Fountains Garden Pool, Black From $28.99

7x10 ft Pond Liner with 20 Mil Thickness PVC Pond Skins Waterfall Fish Pond Liner for Fish Koi Pond Streams Fountains Garden Pool, Black
KFFKFF 15 x 20 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Fish Ponds, with Hemmed Edge and 4 Metal Grommets, Ideal for Water Gardens, Waterfalls, and Fountains, Black $48.90

KFFKFF 15 x 20 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Fish Ponds, with Hemmed Edge and 4 Metal Grommets, Ideal for Water Gardens, Waterfalls, and Fountains, Black
VEVOR LLDPE Pond Liner Pond Liners 15x20ft 20 Mil Fish Liner Fish Pond Liner for Pond From $70.24

VEVOR LLDPE Pond Liner Pond Liners 15x20ft 20 Mil Fish Liner Fish Pond Liner for Pond
1 x 98 CM Pond Liner, 0.2MM Pond Liners for Outdoor Ponds, HDPE Pond Liner Easy Cutting Puncture Resistant, Pond Liners for Water Garden Fountain Waterfall, Koi Fish Aquaculture Pond $8.03

1 x 98 CM Pond Liner, 0.2MM Pond Liners for Outdoor Ponds, HDPE Pond Liner Easy Cutting Puncture Resistant, Pond Liners for Water Garden Fountain Waterfall, Koi Fish Aquaculture Pond
Reinforced HDPE Pond Liner 40x40ft, 5-Layer Leak-Proof Design for Koi Ponds, Duck Enclosures, and Backyard Waterscape Landscaping $239.66

Reinforced HDPE Pond Liner 40x40ft, 5-Layer Leak-Proof Design for Koi Ponds, Duck Enclosures, and Backyard Waterscape Landscaping
Pond Liner, 20 Mil 10 X 10 FT Pond Liners for Outdoor Ponds, HDPE Fish Pond Liner for Natural Looking Ponds, Aquaculture, Koi Ponds and Water Garden, Preformed Large Size Easy Cutting From $32.39

Pond Liner, 20 Mil 10 X 10 FT Pond Liners for Outdoor Ponds, HDPE Fish Pond Liner for Natural Looking Ponds, Aquaculture, Koi Ponds and Water Garden, Preformed Large Size Easy Cutting
Rollback Anjon PolyGuard PVC Pond Liner, 5 ft. x 5 ft., 20-Mil From $22.50

Anjon PolyGuard PVC Pond Liner, 5 ft. x 5 ft., 20-Mil
netuera 10ft x 13ft HDPE Pond Liners Fish Liner for Waterfall Koi Pondsand Water Garden $40.93

netuera 10ft x 13ft HDPE Pond Liners Fish Liner for Waterfall Koi Pondsand Water Garden
KFFKFF 20 x 25 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Fish Ponds, with Hemmed Edge and 4 Metal Grommets, Suitable for Water Gardens, Waterfalls, and Fountains, Black $74.90

KFFKFF 20 x 25 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Fish Ponds, with Hemmed Edge and 4 Metal Grommets, Suitable for Water Gardens, Waterfalls, and Fountains, Black
Beckett UV Resistant Preformed Pond Liner Plastic $199.00

Beckett UV Resistant Preformed Pond Liner Plastic
KFFKFF 20 x 20 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Ponds, with Hemmed Edge and 4 Metal Grommets, Suitable for Water Gardens, Waterfalls, and Fountains, Black $60.90

KFFKFF 20 x 20 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Ponds, with Hemmed Edge and 4 Metal Grommets, Suitable for Water Gardens, Waterfalls, and Fountains, Black
Rollback Half Off Ponds PVC Pond Liner, 5 ft. x 5 ft., 20-Mil From $22.50

Half Off Ponds PVC Pond Liner, 5 ft. x 5 ft., 20-Mil
Beckett Flexible Pre-Cut PVC Pond Liner Black - 8 ft x 10 ft

Beckett Flexible Pre-Cut PVC Pond Liner Black - 8 ft x 10 ft
Anjon LifeGuard 60-Mil EPDM Pond Liner with Underlayment, 5 ft. x 5 ft. From $51.30

Anjon LifeGuard 60-Mil EPDM Pond Liner with Underlayment, 5 ft. x 5 ft.
Half Off Ponds LLDPE Pond Liner, 12 ft x 10 ft, 20-Mil From $59.85

Half Off Ponds LLDPE Pond Liner, 12 ft x 10 ft, 20-Mil
KFFKFF Flexible EPDM Pond Liner, 15 x 20 ft, 45 Mil Thickness, Durable Material for Fish Ponds, Water Features, Waterfalls, Fountains, and Gardens, Black $259.99

KFFKFF Flexible EPDM Pond Liner, 15 x 20 ft, 45 Mil Thickness, Durable Material for Fish Ponds, Water Features, Waterfalls, Fountains, and Gardens, Black
VEVOR 8 x 10 ft Pond Liner, 45 Mil Thickness, EPDM Rubber Material Fish Pond Liner for Outdoor Ponds, Easy to Cut, Durable & Leakproof, for Water Garden, Waterfall, Fishpond, Koi, Fountains, Black $82.90

VEVOR 8 x 10 ft Pond Liner, 45 Mil Thickness, EPDM Rubber Material Fish Pond Liner for Outdoor Ponds, Easy to Cut, Durable & Leakproof, for Water Garden, Waterfall, Fishpond, Koi, Fountains, Black
VEVOR 15 x 20 ft Pond Liner, 14 Mil Thickness, 3-Layer Reinforced PE Fish Koi Pond Liner for Outdoor Ponds, with Hemmed Edge and 4 Metal Buttonholes, for Water Garden, Waterfall, and Fountains, Black $48.90

VEVOR 15 x 20 ft Pond Liner, 14 Mil Thickness, 3-Layer Reinforced PE Fish Koi Pond Liner for Outdoor Ponds, with Hemmed Edge and 4 Metal Buttonholes, for Water Garden, Waterfall, and Fountains, Black
KFFKFF 25 x 30 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Ponds, with Hemmed Edge and 4 Metal Grommets, Ideal for Water Gardens, Waterfalls, and Fountains, Black $103.90

KFFKFF 25 x 30 ft Pond Liner, 14 Mil Thick, 3-Layer Reinforced PE Liner for Outdoor Ponds, with Hemmed Edge and 4 Metal Grommets, Ideal for Water Gardens, Waterfalls, and Fountains, Black
FAQ
What's the most affordable way to line a pond?
Looking for a budget-friendly pond liner? Many people choose flexible plastic liners made from materials like PVC or HDPE, as these are often more affordable than rubber options. Another cost-saving tip is to select a liner size that closely matches your pond’s dimensions, so you’re not paying for excess material. While some DIYers consider using items like tarps, these aren’t designed for long-term pond use and may not offer the durability or safety needed for fish and plants. Always check product details to ensure the liner is safe for your intended use.
Are there alternatives to traditional pond liners?
Yes, there are a few alternatives if you’re looking for something different from standard pond liners. Some people use preformed rigid liners, which are molded plastic shells that can be placed directly into a prepared hole. Others might try compacted clay, but this method requires specific soil conditions and expertise to prevent leaks. Flexible liners made from materials like EPDM, PVC, or HDPE remain popular because they’re easy to shape and install. Always consider your pond’s size, shape, and purpose before choosing an alternative.
Should I put sand under my pond liner?
Adding a layer of sand beneath your pond liner can help protect it from sharp rocks or roots. Sand creates a smooth, cushioned base that reduces the risk of punctures. Some pond builders also use special underlayment fabric for extra protection. If your pond site is rocky or uneven, combining sand with underlayment can provide even more peace of mind. Just make sure the sand layer is even and free of debris before laying down your liner for the best results.
Why do people add baking soda to koi ponds?
Baking soda is sometimes used in koi ponds to help stabilize pH levels. Koi and other pond fish thrive in water with a stable pH, and baking soda can gently raise and buffer the pH if it’s too low. However, it’s important to test your water regularly and add any substances gradually, as sudden changes can stress fish. If you’re unsure about your pond’s water chemistry, consider consulting a pond care specialist for guidance.
How do I pick the right pond liner size?
Choosing the right pond liner size starts with measuring your pond’s length, width, and depth. A common formula is: Liner Length = Pond Length + (2 x Depth) + 2 feet (for overlap), and the same for width. This extra material lets you secure the liner around the edges. It’s always better to have a little extra than not enough, as trimming is easier than patching. Double-check your measurements before ordering to save time and effort during installation.
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