re-sealing aquarium? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 11-09-2011, 05:25 PM Thread Starter
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re-sealing aquarium?

HI,

I have an old aquarium I would like to set up. I had it set up for many years and it never leaked a drop.

It been sitting empty for about a year now and I noticed the caulking on the inside corners of the sides is getting pretty thin looking.

Since it never leaked before can I just put a bead of new caulking over the old and stretch it out onto the glass more as extra protection?
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post #2 of 6 (permalink) Old 11-09-2011, 05:32 PM
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My opinion is "if it ain't broke, don't fix it."
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post #3 of 6 (permalink) Old 11-09-2011, 05:45 PM
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The new silicone will not bond to the old silicone making it useless to just run a bead over the old. If you want to reseal it then you will have to remove the silicone from the inside seams.Here watch this
http://www.youtube.com/watch?v=qiKhaq4pSp8

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post #4 of 6 (permalink) Old 11-09-2011, 05:56 PM
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Quote:
Originally Posted by Mr. Catfish View Post
The new silicone will not bond to the old silicone making it useless to just run a bead over the old. If you want to reseal it then you will have to remove the silicone from the inside seams.Here watch this
http://www.youtube.com/watch?v=qiKhaq4pSp8
Agree......I resealed tanks before as big as 180 gallons. Its not fun on bigger tanks, I'll tell you lol.

Anyways, like already mentioned - new silicone does not adhere to old silicone. Ive did a test on this and easily peeled off once it hit water. Id recommend stripping it all off and redoing - or if you have extra cash to spend, pick up the Adhesive Silicone RTV-100 series from Momentive. There's approx 40lbs of tensile strength - its more solid and commercial standard.

Id re-evaluate the seams to be sure you want to redo, because it might end up being a lot of work at the end depending on the size.
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post #5 of 6 (permalink) Old 11-09-2011, 07:40 PM
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I just resiliconed an old tank a few weeks ago. It really wasn't a hard job, however, it was time consuming to take out all of the old silicone.
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post #6 of 6 (permalink) Old 11-09-2011, 07:59 PM
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Quote:
Originally Posted by touch of sky View Post
I just resiliconed an old tank a few weeks ago. It really wasn't a hard job, however, it was time consuming to take out all of the old silicone.
re-silicone isnt hard its the time and effort to remove old silicone and then if you are a perfectionist like myself, for a larger tank, I re-did the seams three times just so it looks good.
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