How to reseal slate bottom tank? - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 03-03-2010, 12:56 PM Thread Starter
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How to reseal slate bottom tank?

I've got a 10g, metal framed, slate bottom tank I need to reseal. I've read elsewhere than silicone won't bond to silicone. Is this correct?

I want to keep the slate...anybody have any options?


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post #2 of 4 (permalink) Old 03-03-2010, 01:52 PM
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there was a thread on a slate bottom tank rebuild here. A quick search by me couldn't find it. I'll keep trying.

No, silicone won't bond to silicone.

Some info here, but not the thread I was thinking of. https://www.plantedtank.net/forums/eq...llon-tank.html

Here's another: https://www.plantedtank.net/forums/di...rame-tank.html

65 gallon journal:

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post #3 of 4 (permalink) Old 03-03-2010, 02:00 PM Thread Starter
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Yeah, I found a couple of threads...but so far nobody figured out a way to reuse the slate except to double up with a piece of glass either under it or over it.

However, I might be lucky. I didn't actually test the tank. The guy I bought it from hadn't had water in it for like 30 years, so we both assumed it would need to be resealed. I read that if you fill it up with hot water and let it sit overnight, the tar will soften up and often times reseal the tank.

Well, I just filled it up, and so far so good. I'm going to let it sit overnight, but I may not have to worry about it.


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post #4 of 4 (permalink) Old 03-04-2010, 03:49 AM
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I did this a long time ago with a leaking Metaframe tank. I cleaned and scraped as much of the old sealant away as I could with a razor blade scraper. Then used acetone to dissolve away the left overs. After that I completely washed with dish soap and hot water. Then a final rinse with white vinegar diluted with water. I let it dry out for about a week because the edges of the slate might absorb some water. Then I used black silicone to seal it back up. I should say that I cleaned and re-sealed the whole tank not just the bottom. That was a cool tank back in the day and it never leaked again as long as I had it.



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