Aquarium Overflow

Aquarium Silicone Adhesive - Black 10 ounce

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Aquarium Silicone creates lasting, strong and leak-proof bonds. The non-toxic silicone works great for all types of glass fish tank. If you need to repair your current tank, creating a new one, or you simply just have a project that you are working on look no further. 


What's Included?

1x 10.2oz Tube Black Silicone


Note: Do not recommend for the use with acrylic

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Product Questions

Is this product toxic during the curing process? If I poured water over the seal attaching the dry rocks in an aquascape together to increase the sealing rate and after a few minutes once the sealant could hold its own weight filled up the 10g to start cycling the tank, how long would any toxin released by the partially cured silicone sealant remain in the tank if running a nano protein skimmer to break it in and a 30g hang on waterfall filter containing activated carbon? Dosing 40 drops of Nitrobacter daily diluted in RO/DI water as well. Will silicone sealant finish curing underwater?
Question by: Luc on Dec 16, 2021, 12:25 AM
Thank you for your question. Silicone needs to cure for 7-10 days before you can add water. Adding water before then will cause it to not cure properly and could release toxins into the water.
I would recommend using super glue and instant set and then covering the joints with Marco Mortar:
It sets fast and sets in water. In our rock scaping tests we found that it made a strong joint for the cost of materials.
Answer by: William Glenn (BRS Staff) on Dec 16, 2021, 2:35 PM
Can this product reseal the overflow tower?
Question by: Himanshu on Aug 12, 2016, 9:32 AM
Great question! Absolutely! This product is intended specifically for that purpose as well as resealing the aquarium seams. :-)
Answer by: Randy on Aug 16, 2016, 2:04 PM