Acrylic External Overflow Leak Help

tchristman

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I moved my frag tank downstairs to the basement. It has been sitting for a few weeks and yesterday I plumbed the new sump, pump and such.

When I got it running everything was great until I noticed a small leak out of the corner of the external overflow mid-way up the overflow.

I took the drain plumbing out of the overflow and can run everything without the drain pipes since the return pump is not overly powerful and there is a small amount of flow through the overflow. This lowered the water to next to nothing in the overflow and eliminated the leak.

I am not familiar with doing acrylic work or repairs and my questions pertain to resealing the internal edge of the external overflow. As long as the water level stays low it will never be a problem but I would like to seal the leak. How would I do this? Would a bead of Weld-On work? Can I just use silicone? I know silicone does not adhere great but it is not a high pressure area and it is only being used to seal not strengthen.

Your input is appreciated. Thank you..
 
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