Willow Fly Garden Pond Liner (86 Gallons) in a Box 50"x 42"x 21"- Free Shipping! CURRENTLY UNAVAILABLE

Willow Fly Garden Pond  Liner (86 Gallons) in a Box | Preformed Ponds

Willow Fly Garden Pond Liner (86 Gallons) in a Box
50"x 42"x 21"- Free Shipping! CURRENTLY UNAVAILABLE

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Starts at: $124.99

Shipping: Free

Brand: Poli-Tron

SKU: 79930

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Flexible Preformed Ponds- The worlds first preformed pond, folded, rolled and stuffed into a box! 

This unique product utilizes a custom blend polyethylene plastic material. 

The Flex Pond comes rolled up in a UPS shippable box providing major reduction in shipping cost.

They are user friendly and install easy using the instructions and dig templates included. 

These Semi-Rigid hard shell ponds and cascades come in a variety of sizes and gallon capacities.

These pond liners are manufactured using "HMWPE" - High Molecular Weight Polyethylene plastic that incorporates UV inhibitors eliminiating solar fading.

Polyethylene is non-toxic to fish, plant life and pets plus it will not crack or chip.

They are cleverly designed with built in shelves to accommodate plants and underwater lighting if desired. Our waterfalls incorporate the same benefits as the ponds. 

This 86 Gallon Capacity preformed pond is perfect for the Do-It-Yourself pond builder! 

The preformed liner takes the guessing out of pond design and allows you to get to work building your pond! 

50"x42"x21"  86 gallons

The measurements of the willow fly are overall length & width & depth is top lip to deepest portion of the pond.


  • Willow Flex Pond
  • Installation Instructions
  • Installation Template

The Willow Fly Flex Pond holds 86 gallons of water and is designed for more of square installation however, like with all ponds the possibilities are endless. 

All Flex Ponds come rolled up in a UPS shippable box providing a major cost savings in shipping cost. 

We have incorporated abundant shelf area for water plants and underwater lighting accents. 

The custom blended material used is extremely durable providing years of touble free service.

* Price includes ground shipping to your home (lower US 48 states only)

Decorative Ponds - Willow Fly Flex Pond #details


Square design perfect for water plants

  • Flex Pond design ships in small box, opens to pre-formed shape
  • Four corner shelves for plants
  • Square shape is perfect for water plants
  • Plenty of room for fountain and pump
  • Capacity: 86 gallons
  • Dimensions: 50" L x 42" W x 21" D
  • Includes dig template and installation instructions


Dimensions50"x42"x22"Weight10 lbs 


  • Made of High Quality HDPE (High Density Polyethylene).
  • Box Size: 24" x 15" x 14".
  • Weight: 8lb.
  • Capacity: 86 US Gallons.
  • 50"x42"x21"  86 gallons

Customer Question:

Hi, I bought a Flex Garden Pond - Preformed Garden Pond in a Box from you in July. I do not have any fish in it. Can you tell me how to winterize it? Should I drain it or leave water in it? Do I need to keep water out of it during the freezing months? I live in NJ.

Manufacturer Answer:

Tell him to leave the water in, it wonít hurt anything, and keep the top of the pond open, donít lay anything flat or heavy over it. When the water freezes it will expand and as long as it can move upwards it will be fine


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