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

🔧permanently flexible, no cracks

🖤sleek black silicone finish

13444CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Seal the deal with style and strength!

SLEEK BLACK FINISH - Blend your seal seamlessly with modern aquarium aesthetics.
FLEXIBLE DURABILITY - Stay worry-free with a sealant that flexes, never cracks or shrinks.
LEAK PROOF CONFIDENCE - Create a flawless, water-tight barrier that never lets you down.
EFFORTLESS APPLICATION - Apply smoothly and enjoy a long-lasting, professional-grade bond.
SAFE FOR ALL AQUARIUMS - 100% non-toxic formula perfect for freshwater and saltwater environments.

Aqueon Aquarium Silicone Sealant Black (3 oz) offers a professional-grade, waterproof, and permanently flexible seal designed specifically for aquariums. Its non-toxic formula ensures safety for all aquatic life, while the sleek black color provides a discreet, modern finish. Easy to apply and durable, it guarantees a leak-proof bond that won’t crack or shrink over time.

Specifications

ASIN	B0002ASD2U
ASIN	B0002ASD2U
Best Sellers Rank	#32,828 in Pet Supplies ( See Top 100 in Pet Supplies ) #294 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 (880)
Date First Available	October 2, 2001
Department	Maintenance
Global Trade Identification Number	00015905650045
Included Components	Aqueon Aquarium Silicone Sealant Black 3 Ounces
Is Discontinued By Manufacturer	No
Item Dimensions	2 x 2 x 5.75 inches
Item Form	Liquid Ready to Use
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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