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Old 09/20/2020, 11:00 AM   #1
kohare
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Plexiglass Build

Hi all. So I have a nice fish room and with COVID and spare time have decided to grab a tank from the garage I bought almost two years ago. Has been sitting waiting for me. It was glued by someone else, but the seams are not fully watertight. Has some small and some not so small leaks. Looking for advise on how to properly seal this. Iím removing most of the current rubber sealant as it was a poor job, but donít think just reapplying will give me enough confidence. Can I re-glue all the pieces without taking apart? Can I glue small triangular pieces over all seams? Any help would be appreciated. Iím guessing this is around 149 gallons.



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Old 09/20/2020, 11:06 AM   #2
MarAquatic
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Is this tank siliconed together or did they use acrylic glue ? If its only siliconed DO NOT USE IT LIKE THAT

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Old 09/20/2020, 11:12 AM   #3
kohare
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It is definitely glued as well as silicon.


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Old 09/20/2020, 11:15 AM   #4
cabinetman123
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If they used a rubber sealant it wasnít done even close to right. It will need to be taken completely apart and absolutely every bit of the rubber sealant must be removed. Iíd actually recut the pieces edges to be absolutely sure it was gone and sand the flat parts where the edges will be welded to a bit. Then you need to weld it using the pin method using weld 3 or weld 4 clamping it lightly wnen you remove the pins. Acrylic and rubber or silicone just donít mix..


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Old 10/13/2020, 09:58 AM   #5
oreo57
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[QUOTE=kohare;25697544]Hi all. So I have a nice fish room and with COVID and spare time have decided to grab a tank from the garage I bought almost two years ago. Has been sitting waiting for me. It was glued by someone else, but the seams are not fully watertight. Has some small and some not so small leaks. Looking for advise on how to properly seal this. Iím removing most of the current rubber sealant as it was a poor job, but donít think just reapplying will give me enough confidence. Can I re-glue all the pieces without taking apart? Can I glue small triangular pieces over all seams? Any help would be appreciated. Iím guessing this is around 149 gallons.



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Weld on 40 should fix it after removing the silicone garbage.


Use it as a bead internally


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Old 10/15/2020, 01:07 PM   #6
wtac
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The bond in that seams, IMHO, is at most 20%. One should not see any bubbles or "white" areas in the seam.

Looks like there is a solvent weld at the perimeter of the seam and will be difficult if not impossible to get the WO to wick through the entire thickness of the panel.

You will most likely have to cut it apart and get clean edges to do a proper solvent weld.

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Old 10/15/2020, 01:53 PM   #7
Duality
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You can try to see if someone can plastic weld the seams. They would use a plastic air welder and melt a plastic rod into the joint. My itech skimmer was plastic welded together and has a water tight seal.

I circled the welds.


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Old 10/16/2020, 08:49 PM   #8
OzIA
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Internal dimensions? Thickness of plexiglass? Is it possibly polycarbonate?

I can't believe this is a 100% silicon bond. Are you sure they didn't bond it with Weldon and then try to fix the leaks with silicone ?

Take a photo of the corner from the seam side.


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