Aqueon Silicone 3-oz Aquarium Sealant

By Aqueon
Rated 4.1818 out of 5 stars


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$4.36Chewy Price
$12.99Chewy Price
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This Item – Aqueon Silicone 3-oz Aquarium Sealant, Clear
Rated 4.1818 out of 5 stars
$4.36Chewy Price

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CaribSea Super Naturals Moonlight Freshwater Sand, 20-lb bag
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Total Price: $30.95

About This Item


  • Made with 100% silicone, this high-strength sealant has the same strength as the silicone used to manufacture new aquariums
  • Creates a waterproof seal to stop tank leaks safely and effectively
  • It’s easy to apply and non-toxic, so it’s safe for freshwater and saltwater aquariums
  • The long-lasting bonding power creates a permanent seal that stays flexible so it won’t crack or shrink
  • Powerful and easy to apply

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Play Video: Learn More About Aqueon From Our Team of Experts
Learn More About Aqueon From Our Team of Experts

Questions & Answers

8 Customer Questions

How long does this take to cure before you can put water in the tank?
Answer by ChewyOct 17, 2018
To ensure a leak-proof seal, allow at last 48 hours before filling the aquarium with water.

do I have to remove the old sealant? before I put the new sealant on it
Answer by ChewySep 14, 2020
It is recommended to apply this sealant to a clean surface.

Can it bond PVC plastic pipe?
Answer by ChewyJan 15, 2018
This product is recommended for use with aquarium glass only.

can u apply with tank already filled
Answer by ChewyMar 10, 2021
This sealant cannot be applied to a filled tank.

ReviewsWrite a Review

Rated 4.1818 out of 5 stars
11 Ratings
Would recommend to a friend

11 Customer Reviews

Rated 5 out of 5 stars
By Mary on Jan 15, 2021

It worked great!

This sealant was easy to use and dried within the 48 hours recommended. The worst part of using it was job-related...removing the fish from the tank and draining the water!

Rated 5 out of 5 stars
By WildeOne on Jan 29, 2021

Great glue.

Worked great for gluing rock together. Ready to go in just 24 hours.

Rated 5 out of 5 stars
By Carolyn on Jul 13, 2020

Worked well

Used this tube to "glue" together two parts of an underwater ship. Previous tubes used by son to replace tank sides and it spread and held well.

Rated 5 out of 5 stars
By MyDobbyBoy on Mar 18, 2020

Did the job

This item fixed the problem with ease and confidence

Rated 5 out of 5 stars
By Traci on Jun 11, 2019

Aquarium Sealant Excellence

This item worked as expected and arrived early. The aquarium is doing so much better!!!

Rated 1 out of 5 stars
By Disappointed77 on May 17, 2019


Only stuck for a few months & then started to come apart

Rated 2 out of 5 stars
By JenM on Dec 4, 2018

The tube busted

The tube busted on me while I was separating my aquarium with a divider. Completely disgusted

Rated 5 out of 5 stars
By Debi on Aug 17, 2018

Holds well

Works well on sealing tanks and also used it to make a smaller tank. Thanks!!

Rated 3 out of 5 stars
By Shaunabowman on Jun 13, 2018


Good thing I ordered two cause I cut the top to one and as I was squeezing it the other end of it opened and oozed all over the bottom of the fish tank. Had to throw that one away.

Rated 5 out of 5 stars
By Doggo on Oct 7, 2017

It held up

Had to reseal my 55 gal tank. I messed up a little bit when applying it, but the sealant itself held up.