Aqueon Aquarium Silicone Sealant, Clear, slide 1 of 1

Aqueon Aquarium Silicone Sealant, Clear

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Keep your aquarium leak-proof with the Aqueon Aquarium Silicone Sealant. Formulated with 100% silicone, it forms a clear waterproof seal to stop leaks, and does not crack or shrink when applied. It’s actually the same high-strength silicone that’s used to make new aquariums so it’s a long-lasting, professional-grade bond you can trust. And since it’s non-toxic, it won’t harm plants or fish and works in both freshwater and marine aquariums. Plus, the formula is proudly made in the USA.

Key Benefits
  • Made with 100% silicone to seal aquariums for a leak-proof, water-proof finish.
  • High-strength silicone creates a permanent seal that will not crack or shrink.
  • It’s the same grade of silicone used to seal new aquariums so you can expect professional-grade quality.
  • Formulated to be non-toxic so it’s perfect for use on all aquariums, including freshwater and marine aquariums.
  • Made in the USA and comes in one tube or 2-pack options to fit your needs.

See all items by Aqueon

  • Item Number
  • Aquarium Type
    Freshwater, Saltwater
  • Fish Type
    Tropical Freshwater, Marine Fish
  • Material

1) Empty aquarium completely and thoroughly dry glass.

2) Carefully remove all old silicone with a single edge razor blade. If water is trapped between glass, you can use a hair dryer to blow the water out with cool air.

3) Thoroughly wipe the area to be sealed with rubbing alcohol and let glass completely dry.

4) Apply sealant so it evenly contacts both glass surfaces.

5) For a smooth seal, hold at a 45 degree angle and apply pushing sealant ahead of tube.

6) To achieve a final smooth seal, use a flat tool and a dry paper towel to remove excess sealant within five minutes. Any additional excess on the glass can be trimmed after 24 hours, but be sure not to cut into the seal.

7) When finished, recap tube immediately. To ensure a leak-proof seal allow 48 hours before filling aquarium with water.

Rating: 4.0 of 5 stars 6 Reviews 6 Reviews 4 out of 5 Stars

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67% Recommend

67% of reviewersrecommend this product

Rating: 4.0 of 5 stars 4 / 5

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6 Reviews

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  • 1 out of 5 stars

    More than half the tube was solid.

    By Maddy on Sep 7, 2019

    Only a third of my tube was useable. More than half of it was solid. Didn’t have enough to seal my five gallon tank. The seal on the tube wasn’t broken and it was my first time using it the day after it was delivered. Very disappointed!!

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  • 5 out of 5 stars


    By FierySpirit on Apr 15, 2019

    Great piece of advice: Always buy more silicone than you think you'll need -- you don't want to run out in the middle of your project! So I bought the big one. This is high quality stuff and I'm so glad I bought the big one. I used it twice to finish a project I had -- resealing a 46 gal tank and then using it a week later to fix the brace of said tank when it broke. The tube seals well if you stick a long screw into the cut top -- that's how I was able to use it twice at two separate times (and I've sealed it again for use later when I need it).

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  • 3 out of 5 stars

    Very Messy

    By Michelle on Mar 11, 2019

    When I tried to use this product, the back of the tube came out and silicone went everywhere. I wound up scraping it out of the tube and putting it in a pastry bag to seal my aquarium. On the upside, it doesn't leak!

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  • 5 out of 5 stars

    New silicone, best one to get!

    By Splash on Nov 12, 2018

    My dad and I have redone his 250 gallon aquarium twice now! This second time worked like a charm, the speedy service of getting our product from Chewy was amazing, not to mention the color of the silicone was so crystal clear and has worked excellent! The first time we bought a regular brand from a local pet store and it started to leak within a month of us redoing it, keeping our fingers crossed this continues to hold up!

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  • 5 out of 5 stars

    It does the job

    By Katie on Dec 28, 2018

    It's simple to use, not really expensive, and works. Cured in 2 days.

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  • 5 out of 5 stars

    works great

    By Emanon on Aug 20, 2018

    ordered it because my small 2.5 gallon tank got a crack in it, I was able to put this on it and wait 2 days for it to dry as recommended and it has not leaked. I probably will remove and do again because I could not get it as smooth as I want it but the product works great.

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