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Thread: Tiny gaps in silicone....advice needed.

  1. #1
    DIYFK member The Stork's Avatar


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    Question Tiny gaps in silicone....advice needed.

    Hi I'm new to this forum and had been searching for a forum just like this for a long time. I'm glad I found it.

    So I have a 120 gallon glass tank made with .5" Starfire glass on 3 sides. 48" x 30" x 20". The tank looks about 8 years old and the silicone sealing job looks crappy.
    I had plan to re-seal the tank but then while moving it, the bottom glass cracked. So I decided to take the entire tank apart and strip off all the old silicone off and replace the bottom panel. I watched all the tank building videos and decided to follow Joey's method. I used black silicone.

    So when I finished the build, I inspected my work and to my dismay, I saw some air pockets in the silicone between the glass edges. There about 4 pockets thru out the tank measuring 2x5 mm to 3x3mm each.
    My question is, Do I need to worry about this??? Is this bad? Do I need to take the whole thing apart and start all over?
    I'd hate to re-do this, as it's a lot of work and time consuming.

    Any and all advice is welcomed.

    Thank you.

  2. #2
    DIYFK member Meep's Avatar


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    Pictures...

  3. #3
    DIYFK member FLDave's Avatar


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    Click here to enlarge Originally Posted by Meep Click here to enlarge
    Pictures...
    Click here to enlarge

  4. #4
    DIYFK member The Stork's Avatar


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    They're essentially small bubbles. But they're not through and through bubbles. Click here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlargeClick here to enlarge

    Sent from my SM-G955U using Tapatalk

  5. #5
    DIYFK member The Stork's Avatar


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    okay guys and gals,...pics are up!
    Let's hear your opinions.
    Thanks.

  6. #6
    DIYFK member Meep's Avatar


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    It will probably hold water well enough like that but, it's certainly unsightly...

    Was this fresh new silicone? I only asked because I have seen similar looking imperfections in old and/or silicone that has be exposed to freezing temps before application, that isn't to say this is the reason, it could just be a similar effect caused by the way you applied it... If there was some 'inconsistency' in the silicone that created those voids vs just the way you applied it, that could be an issue of concern...

  7. #7
    DIYFK member FLDave's Avatar


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    "If" it were me............I'd reseal the entire tank. 120 gallons could be one helluva leak.....Click here to enlarge

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