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Thread: Silicone

  1. #1
    Senior Member maxthedog2000's Avatar

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    Silicone

    7 days ago I re silicone this tank with RTV silicone. It sat outside for 48 hours until I moved it into my house. It has been sitting as you see it in the picture in my house since then. The silicone seems to be cured however, when I open the canopy it still has the strong new silicone smell. How do I know when the silicone has fully cured and it's safe to add live sand, live rock, and water? This silicone feels firm or normal I'm just concerned because of the smell. It may be in part due to the fact that the canopy has been on and closed for the last 5 days. What are your thoughts and suggestions?

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    It could be because the cover was on the tank during cure. Typical set time for silicone is around 72 hours. What type of silicone did you use? Was it aquarium safe?
    Doyle

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    Senior Member maxthedog2000's Avatar

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    Quote Originally Posted by hooked View Post
    It could be because the cover was on the tank during cure. Typical set time for silicone is around 72 hours. What type of silicone did you use? Was it aquarium safe?
    Yes I made sure it was aquarium safe. I cannot remember off the top of my head but it was a black RTV silicone.

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    SCMAS President

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    You are probably ok. I would let it air out a bit and verify that the smell is diminishing.
    Doyle

    "It's better to be silent and thought the fool than to open your mouth and remove all doubt."



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    Senior Member maxthedog2000's Avatar

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    Quote Originally Posted by hooked View Post
    You are probably ok. I would let it air out a bit and verify that the smell is diminishing.
    Yeah I think I will let it sit for another week with it open thanks

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  8. #6
    Registered User Levi's Avatar

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    When doing a reseal of any kind I always recommend no less than 7 days. The thicker the bead the longer the cure.

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    What you are smelling is the acetic acid in the silcone. Like Levi said, let it cure a good long time.
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    When I resealed the 100 gallon sump off my 180 I let it sit about 3 days outside. I used 4 tubes in total, nice thick beads. Plumbed it right in on day 5 and have never had a problem
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