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Author Topic: Bead size when resealing aquarium  (Read 2153 times)
djones8989
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« on: April 12, 2015, 01:11:22 PM »

Hi there,

I have just resealed my 55 gallon with aquarium grade silicone and followed all of the proper steps for prep work etc.

I have one concern though:

Most of the silicone coverage throughout the corners came out great.  The silicone bead is wide and clear.  However, after it has dried I noticed a small segment of silicon where the bead is not wide at all.  Actually the smoothed out bead line ends very near the corner of the glass seam.  I pushed the bead in nicely, but I'm just concerned that the bead needs to be a certain width (overlapping the glass seem) to ensure no leaks. 

Did I state my problem clearly enough lol?

What do you think?
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russ
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« Reply #1 on: April 12, 2015, 01:53:24 PM »

If this is in the inside of tank, yes, the seam should overlap both side of the inside seam by a 1/4th inch. 3/8ths min, but I would shoot for at least 1/4 inch overlap. May take a double application with a lighter finger touch to spread the silicone a bit wider.


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"For every difficult question, there is an answer that is clear and simple and wrong."
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djones8989
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« Reply #2 on: April 12, 2015, 02:21:00 PM »

Thank you for the reply.

It is the inside of the tank.  The silicone has been curing for a few hours now.  Can I reapply some silicone over that area or is it too late?

I would hate to have to reseal the entire tank again to make up for this one spot.

Thanks for the help. 
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russ
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« Reply #3 on: April 12, 2015, 02:42:14 PM »

I don't think there will be a need to reseal the entire tank. Let the application cure for awhile longer and then simply overlay the new bead.
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"For every difficult question, there is an answer that is clear and simple and wrong."
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djones8989
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« Reply #4 on: April 12, 2015, 03:25:17 PM »

Thank you for the information.

I was just concerned because I have read in so many places that uncured silicone will not stick to cured silicone.

But I think freshly cured silicone is a better palate that old dried out silicone.  What do you think?

I just want to be confident that this think won't leak while I'm out of town.
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