Fixing a leaking tank - The Planted Tank Forum
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post #1 of 6 (permalink) Old 05-25-2008, 11:20 AM Thread Starter
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Fixing a leaking tank

Hey. I just got a leaking 65gal from a family member. I want to know if its worth fixing. The leaking is in the front right corner a 3rd of the way down from the top. My plan is to scrape off the silicone half way down and reseal. Is this a good enough reseal to let the tank last? The tank is only 45cm high. Also I will be using a 18gal tank as a sump as the only filtration is this enough? Thanks
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post #2 of 6 (permalink) Old 05-25-2008, 11:31 AM Thread Starter
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This is a rimless(center brace-less) tank by the way
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post #3 of 6 (permalink) Old 05-25-2008, 02:31 PM
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You will need to remove all the silicone on the inside with a razor, then clean it real well. You should never put new silicone over old, it won't bond together that good and you will have a chance of a leaky aquarium again. You don't need to dig the silicone out of the seams just cut and scrape it off the glass surface. Also make sure you use silicone that doesn't have mildew resistant additive, just plain silicone. When I resealed a tank I used all-glass aquarium silicone just to be sure. After I was done scraping I cleaned the seams with acetone to remove the film and then cleaned it with vinegar and water real well. It will take some time and effort but I'm sure it will be worth it.

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post #4 of 6 (permalink) Old 05-25-2008, 03:21 PM Thread Starter
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What do you mean by all? Do i have to remove all the silicone of the entire aquarium? or just right down the side where its leaking(just the corner not bottom)?
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post #5 of 6 (permalink) Old 05-25-2008, 06:43 PM
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ALL of the silicone.
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post #6 of 6 (permalink) Old 05-26-2008, 04:32 PM
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Yep, ALL of it.

I even use PolyGone to make sure I get ALL the remnants off the glass. The cleaner you get it, the better it will hold up.
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