How to Repair Aquarium Glass

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How to Repair Aquarium Glass

Because aquariums are glass, they are fragile and may sustain damage at one point or another. Some blemishes in the glass are simply cosmetic and may not require immediate attention. However, more serious damage, such as leaking seals or broken glass, must require immediate repair in order for owners to continue housing their fish and other creatures inside. The difficulty of the repair depends on the extent of the damage. To repair the glass on an aquarium, owners must gather supplies, prepare the glass, and identify the type of repair they need to make.

Gather Required Supplies

Before making a repair, aquarium owners need to make sure they have all of the necessary supplies. Many of the supplies are available around the house. For sealing cracks and fixing chips, users need a few specialised supplies.



Glass Cleaner

Removes dirt and residue from the glass to ensure a tight bond in the repair

Razor Blade

Removes old silicone and smooth epoxy on the glass


Holds the glass together as the silicone dries


Creates a watertight bond between two pieces of glass

Scratch Repair Kit

Smooths light scratches from the surface of the glass


Fills cracks and chips in the glass

Suction Cup

Creates suction to hold epoxy in place

Not all supplies are needed for all repairs. For example, aquarium owners that are replacing an entire piece of glass do not need a repair kit for filling and smoothing scratches. Thus, it is important for aquarium owners to identify the type of repair they need to make to ensure they have all necessary supplies.

Prepare the Tank for Repair

To prepare the aquarium for repair, owners must remove their pets and place them in a backup tank or safe containers. Owners must also remove all rocks and decorations from the aquarium. Once they drain all water, they should rinse it with freshwater. If necessary, owners may use glass cleaner to remove excess residue. However, they must remember to clean the glass again with fresh water before filling it and placing pets back inside. Once the tank is clean and dry, the repair process can begin.

Make Repairs to the Aquarium Glass

Not all glass damage undergoes the same process for repair. Aquarium owners need to identify the type of damage to determine the best course of action. The three most common types of damage to aquarium glass are scratches on the surface, chipped glass, broken or cracked glass, and glass that leaks at the seals.

Light Scratches on Aquarium Glass

It is possible to repair light scratches in aquarium glass easily. Users define light scratches as those that do not catch a fingernail when passed over the scratch. Aquarium owners cannot repair deeper scratches, and chipped glass requires a different course of action. For light scratches, use a scratch repair kit that contains a glass-polishing compound. Mix this with water to create a slurry and then spread it over the surface. Work the slurry up and down over the scratch with the included felt bob until removal of the scratch is complete.

Chipped Glass on the Aquarium

To repair chipped glass, aquarium owners place a suction cup over the clean broken glass. They follow the instructions on the package to prepare the epoxy and place it in an injector needle. The insert the needle into the suction cup and add epoxy until both the crack and the suction cup are full. They place the aquarium in the sun for 5 minutes to allow the epoxy to set before removing the suction cup. With the razor blade, they cut away excess epoxy so that it is flush against the glass and then set it back in the sun so that it can cure completely.

Broken Glass on the Aquarium

If a side of the aquarium breaks, then owners must replace the entire pane. People first use the razor blade to strip the old silicone completely from the edges. They then carefully remove the broken pieces of glass. Once removed, they use the razor blade to strip all remaining pieces of silicone. They may need to use a bit of acetone to clean the area. Next, users place a thin line of silicone on all edges of the tank and position the new pane in its place. They use the tape to hold the glass in place until the silicone dries. Then they apply silicone to the interior corners and use a finger to smooth it down. The silicone must cure for 24 hours before refilling the tank with water. Owners can repair a leaky aquarium by replacing the seals using this same method.

How to Buy Glass Repair Supplies on eBay

Look for great deals on replacement parts and repair supplies for your aquarium on eBay. Use the basic or advanced search features to locate items based on the keywords you enter. Sort the listings by selecting options, such as condition or price range, from the refinement menu. For lower prices, shop from sellers that offer free postage and packaging.

Broken glass on an aquarium does not mean that owners must replace the entire tank. With the right supplies, a little bit of time, and some hard work, owners can make the repair themselves and have the aquarium looking like new.

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