How to Cure a Silicone Aquarium

Silicone is used to create an adhesive bond and seal aquarium systems. Select a silicone adhesive that is 100 percent silicone. Silicone with anti-fungal additives, colors, or other contents may be toxic to the aquarium inhabitants. Silicone beads on glass, when smoothed, provide the strength required to hold glass together. Large and extra large sized aquariums may require silicone not only on the connecting edges, but also between the glass. Curing is dependent on temperature, humidity and time. Failure to allow the silicone to fully cure may result in poor bonding and solvent release into the aquarium system.

Things You'll Need

  • 100% silicone
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Instructions

    • 1

      Prepare the surfaces for silicone adhesion. Remove debris, old silicone and any material which will prevent bonding with the silicone. Use hot water and a scrubber if necessary. Avoid using chemicals to clean or prepare the surfaces.

    • 2

      Spread the silicone over the surface which is being sealed or to which objects will be adhered. When mounting aquarium decorations, use braces if necessary to prop up the device while the silicone is curing. For sealing seams in glass, use a continuous bead, and then spread evenly in one smooth motion.

    • 3

      Allow the silicone to cure at room temperature, if possible. Store the aquarium or silicone connected devices in a well ventilated area. As silicone cures an acidic vinegar-type smell will be emitted. This odor may cause headaches or illness during prolonged exposure.

    • 4

      Allow the silicone to fully cure. A 1/8-inch thickness of silicone will cure to a usable state in 24 hours at a relative humidity of 50 percent and temperature of 77-degrees Fahrenheit. For full strength and complete curing, a full seven days is required. Cooler temperatures or higher humidity result in longer cure times.