Fish-Safe, Non-Toxic Epoxy Pond Liner for Koi Ponds, Water Features & More!

Pond Armor’s Pond Shield is a professional-grade epoxy liner designed to create a seamless, waterproof barrier for concrete ponds, pools, lakes, koi ponds, aquariums, terrariums, vivariums, hydroponics, salt water units, streams, waterfalls, fountains, wildlife habitats, bird baths and other water features. When properly applied and fully cured, it forms a durable, fish-safe, plant-safe coating built to stop and prevent leaks.

Epoxy pond liner engineered for ponds, aquariums, stock tanks and decorative water features.

  • Concrete & Koi Ponds

  • Aquariums, Vivariums & Terrariums

  • Lakes, Streams, & Waterfalls

  • Hydroponics & Wildlife Habitats

  • Stock Tanks & Pools

  • Bird Baths & Fountains

Bonds to concrete, brick, stone, wood, fiberglass and more!
Non-toxic epoxy coating designed for long-term waterproof protection.

Pond Shield non-Toxic Epoxy Liner - 1 quart

1.5 Quart Kit – $89.95

  • Coverage up to 60 Square Feet at 10 mils thickness
Pond Shield non-Toxic Epoxy Liner - half gallon

1.5 Gallon Kit – $359.80

  • Coverage up to 240 Square Feet at 10 mils thickness
Pond Shield non-Toxic Epoxy Liner - 1 gallon

3 Gallon Kit – $719.60

  • Coverage up to 480 Square Feet at 10 mils thickness
Explore All Products
pond armor crack rx caulk

Pond Shield Crack RX – $15.95

Crack RX is a professional-grade polyurethane caulk designed to seal and bridge cracks in your substrate before applying the epoxy coating. It is easy to apply with a standard caulk gun, dries quickly, and creates a flexible, long-term bond that prevents future leaks.

pond armor surface prep

Pond Armor Surface Prep – $98.99

Surface Prep is a bio-degradable etching solution designed to open the pores of concrete and masonry surfaces. It effectively removes calcium deposits, ensuring your epoxy coating achieves a long-lasting, industrial-strength bond without the harsh fumes of traditional acids.

Waterproof Protection for Ponds, Tanks, & Water Features.

Why Buy Pond Shield® Direct from Pond Armor?

Fish & Plant-Safe Epoxy Coating

Non-toxic pond epoxy designed for koi ponds, aquariums and water features.

Bonds to Concrete & Masonry

Adheres to concrete, brick, block and stone surfaces.

Made in the USA

Developed by a US Navy Veteran. Manufactured and shipped directly from the United States.

Full Color Selection

Access our complete color lineup — including hard-to-find shades not always available through retailers.

Freshest Product Batches

Receive product shipped directly from the source.

Real Expert Support

Speak with the Pond Shield experts before and after purchase.

wooden reef tank sealed by Pond Shield
Wedding Cake Fountain sealed by Pond Shield black Epoxy
waterfall sealed by Pond Shield
colored epoxy to match rock waterfall
pond shield epoxy with Travertine fountain
this sea lion pool is lined with non-toxic pond shield epoxy
koi pond lined with pond shield
this water feature is waterproofed with Pond Shield
gunnite pond sealed with pond shield before use
dolphin pool lined with non-toxic blue pond armor
gunnite waterfall sealed with color matched pond shield expoxy
koi pond and waterfall
concrete pond sealed with blue pond shield epoxy
pond shield epoxy seals waterfall bowls
backyard stream and koi pond
backyard stream pond

Comments from our happy pond owners:

“

Pond Armor product is well worth the up-front cost when you consider the long-term savings. The "101 tips" and wonderful timely advice from the folks at Pond Armor makes installation doable for the average DIY'er.

Cheryl N.Honolulu, Hawaii
“

Rescuing giant fish requires giant confines. I have used just about everything on the market to seal my tanks, nothing has outperformed Pond Shield. I was immediately impressed with the product, not to mention the customer service from Pond Armor.

Jonathan StrazinskyMonster Fish Rescue
“

From the first phone call, Pond Armor gave us the technical and informational support we needed. Not only did they share their considerable technical expertise with us, they showed our team how to master the steps necessary to be comfortable in working with this new product. We recommend the use of Pond Shield Epoxy without reservation and are grateful for the generous technical support too.

Bill CoryellTolosa Gardens and Landscape
“

I had a customer who had a leaking pond that was causing their water bill to get out of hand. They called me to take a look at what could be done. Before I knew about Pond Armor, I may had suggested starting over with a problem project like this, but instead, I was able to seal the pond with Pond Shield. The water company who immediately gave them a 20% discount on their water bill for getting it fixed.

Anthony QuniteroKoi Enterprise
“

It’s a very durable surface, hard, slick and easy to clean. It takes a little bit of practice to get the hang of applying Pond Shield, but somebody who’s pretty handy wouldn’t have a problem with it.

Ben CaseDown to Earth Designs