How to Reseal a Glass Tank Aquarium

If you think that your glass tank needs to be re-sealed, you may want to try and handle the problem yourself. Whilst this may seem a little intimidating at first, with the right tools in hand you can get the job done in no time. In fact, sealing a glass tank aquarium can be a great DIY project to enjoy from the comfort of your own home. All you need to succeed is a cartridge of our best-selling sealant and adhesive, CT1.

CT1 is water resistant and often used in boating repairs. The main reason why it remains so popular with boat maintenance procedures is the fact that it can work in any condition. Whether you need to seal something in an extremely hot climate, on top of Mount Everest or underneath the sea, CT1 has got your back. It can seal leaks even when it’s been submerged beneath water, making it the best underwater sealant, adhesive and filler that the world has ever known.

Sealing your Glass Aquarium

Before you seal your glass tank, you of course need to remove any fish you have in there. Make sure to do this carefully and safely. You can keep them in a temporary holding container until you are ready to move them back into the tank.

CT1 is 100% odourless and safe to use, which means you don’t have to worry about any harmful fumes affecting the health of you or your aquarium fish. This is extremely important when it comes to resealing tank aquariums as using the wrong sealant can put the health and the lives of your fish at risk. Always choose a safe formula and one that is chemical resistant, such as CT1, The Snag List Eliminator.

Cleaning with Multisolve

After you have emptied the tank, you may need to remove and clean away any old sealant that remains behind. Take a safe solvent such as Multisolve and spray it on to the area. After letting it work into the silicone, it will begin to pry itself from the surface of the tank. Take a razor scraper or basic utility knife and use this to help you detach the old silicone sealant. It should lift off with minimal effort and leave no traces behind. Clean any residue away with a paper towel and make sure that the area is free from dust and debris.

Take your CT1 cartridge and simply apply the sealant where and as required. CT1 is often used to seal fish ponds and swimming pools to repair and prevent leaks. This makes it the perfect sealant to use to reseal your fish tank aquarium. Once the sealant has cured, the job is complete. Be careful when you move your aquarium fish to and from the fish tank. It’s better to take it nice and slow than to simply drop them back into the tank. Take your time and be gentle!

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