Can this be used to fix a fountain in a reptile terrarium

Yes, but keep in mind everything has to be completely clean and dry before applying it. Also keep in mind it is a sealer, not an adhesive, so it won't hold broken pieces together.

I have a crack in the glass on the bottom of my tank. Will this seal it?

If tank has a frame beneath it's tricky. The silicone will seal it providing you prep the contact area. You must clean away the old sealant & calcium buildup;this is for outside & inside the tank. It requires a one inch bead on both sides of the glass, *then two inches onto the old silicone - both sides of the crack. Mash/feather new sealant beyond each side of old seal.*

Can I use this to fix leaks in a horse trough around the heating element? Will it hold it's integrity against freezing temperatures?

It should. Just make sure all surfaces are thoroughly cleaned and dried before application. Silicone can withstand sub-freezing temperatures and very high heat. After application you should wait 1 week before using the trough though.

Can I use this to bond glass with acrylic for the overflow to my tank?

You sure can, I use it for that very same purpose.

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Aqueon Aquarium Silicone Sealant, Black, 3 Ounces

Product ID: 3030205

Details

Brand
Aqueon
Item Weight
3.5 ounces
Item dimensions L x W x H
2 x 2 x 5.75
Material
Silicone
Style
Standard

💧100% waterproof seal

🖤sleek black silicone finish

🛠️permanently flexible, no cracks

₨10345

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Description

🖤 Seal your aquatic sanctuary with confidence and style!

SLEEK SUBTLE - Black silicone blends seamlessly with your tank’s aesthetic for a modern, professional look.
LEAKPROOF CONFIDENCE - Create a flawless, water-tight barrier that never lets your aquatic world down.
AQUARIUM SAFE FORMULA - 100% non-toxic, perfect for both freshwater and saltwater environments—safe for your finned friends.
DURABILITY THAT LASTS - Permanently flexible formula ensures no cracking or shrinking over time—maintenance made easy.
EFFORTLESS APPLICATION - Smooth, easy-to-use sealant that sticks instantly and bonds long-term—get your tank sealed in no time.

Aqueon Aquarium Silicone Sealant is a premium, 100% non-toxic black silicone designed to create a permanent, waterproof, and flexible seal for freshwater and saltwater aquariums. Its durable formula prevents cracking and shrinking, ensuring long-lasting leak protection while blending discreetly with your tank’s design.

Specifications

ASIN	B0002ASD2U
ASIN	B0002ASD2U
Best Sellers Rank	#91,572 in Pet Supplies ( See Top 100 in Pet Supplies ) #777 in Aquarium Water Treatments
Brand Name	Aqueon
Color	Black
Compatible Material	Glass, Metal, Plastic, Rubber
Customer Reviews	4.5 4.5 out of 5 stars (892)
Date First Available	October 2, 2001
Department	Maintenance
Global Trade Identification Number	00015905650045
Included Components	Aqueon Aquarium Silicone Sealant, Black, 3 Ounces
Item Dimensions	2 x 2 x 5.75 inches
Item Form	Liquid Ready to Use
Item Highlight	Aquarium safe silicone, waterproof seal stops leaks; permanently flexible, won't crack or shrink
Item Type Name	Aqueon Aquarium Silicone Sealant
Item Weight	3.5 ounces
Item model number	100165004
Manufacturer	Central Garden & Pet
Manufacturer	Central Garden & Pet
Material Type	Silicone
Model	100165004
Number of Items	1
Part Number	100165004
Product Dimensions	2 x 2 x 5.75 inches; 3.5 ounces
Style Name	Standard
UPC	015905650045
Unit Count	3 Ounce
Water Resistance Level	Waterproof

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₨10345

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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