We wouldn’t recommend it. The silicone is for sealing liner to faceplates with screws and any plumbing parts that are threaded and might need extra sealing. It can also be used in place of Teflon tape. The Pond Company

Aquascape Black Silicone Sealant - Fish Safe, Waterproof, Flexible, Durable Adhesive for Ponds, Water Functions, Aquariums 10 oz 29186

Aquascape Black Silicone Sealant - Fish Safe, Waterproof, Flexible, Durable Adhesive for Ponds, Water Functions, Aquariums 10 oz 29186

Q: Will this work to seal a few small holes in a black pond liner? The holes are on a horizontal planting shelf.

I would recommend firestone primer, seam tape and cover tape instead for the right way to patch holes in 45 mil epdm rubber.

Q: Can i build a new aquarium with this?

Yes, I think clear would be more aesthetically pleasing but this should work for a glass aquarium. I wouldn't use it for acrylic.

Q: Will this work to seal around a Rubbermaid 100 gallon horse trough—around the rectangular piece of the bulkhead? No leak from threads

I have a 3500 Gallon Koi Pond and it sealed a couple of leaks I had in my liner very well. I was losing about 6 inches of water a day and once I found the tears in my liner I applied the sealant around the tear and pushed it into place. It has bee holding water without leaking for several weeks now so I'm thinking yes, it will hold in your application. It goes on very wet but seals to a hard surface. Good Luck.

Product ID: 763785881

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Details

Material
other
Brand
Aquascape
Style
Compact
Item Weight
363 g
Item dimensions L x W x H
26.4 x 5.1 x

🌞UV resistant for outdoor durability

🐟fish & wildlife safe formula

💧100% waterproof seal

Frequently Bought Together

Aquascape Black Silicone Sealant – Safe for Fish, Waterproof, Flexible, and Durable Adhesive for Ponds, Water Features, and Aquariums, 10.1 ounces, 29186

TotalPond Waterfall Foam Sealant

Description

🐠 Seal the deal with Aquascape — where durability meets eco-friendly innovation!

MULTI SURFACE MASTERY - Bonds seamlessly to metal, glass, wood, tile, and more for versatile repairs.
ECO CONSCIOUS FISH SAFE - Formulated to protect aquatic life while meeting green building standards.
AQUATIC GRADE WATERPROOFING - Ensures a leak-proof, airtight bond for ponds and aquariums.
UV TEMPERATURE RESILIENCE - Withstands harsh sun exposure and extreme climates without cracking.
LONG LASTING READY WHEN YOU ARE - 10 oz tube with a 24-month shelf life keeps your projects on standby.

Aquascape Black Silicone Sealant 29186 is a premium, fish-safe adhesive designed for waterproof sealing in ponds, aquariums, and water features. Its UV-resistant, flexible formula bonds to a wide range of surfaces, offering durable, airtight protection that meets modern green building standards. Perfect for indoor and outdoor aquatic projects, it comes in a convenient 10 oz tube with a 24-month shelf life.

Specifications

Manufacturer	Aquascape Designs, Inc
Part number	29186
Item Weight	363 g
Product Dimensions	26.42 x 5.08 x 5.08 cm; 362.87 g
Is Discontinued By Manufacturer	No
Size	10.1-ounce Caulk Tube / Black
Color	Black
Style	Compact
Material	other
Measurement System	US
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	26.4 x 5.1 x 5.1 cm

Have a Question? See What Others Asked

Will this work to seal a few small holes in a black pond liner? The holes are on a horizontal planting shelf.

use on concrete?

Can i build a new aquarium with this?

Will this work to seal around a Rubbermaid 100 gallon horse trough—around the rectangular piece of the bulkhead? No leak from threads

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