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Old 04/30/2016, 11:02 PM   #1
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Building a large tank out of wood need to know about waterproofing?


I would like to know about waterproofing a roughly 2000 gallon tank I'm building. I couldn't find the size and shape tank I wanted so I decided to make my own out of pallets and pressure treated 4x4's. This tank is not going to be aesthetically please purely structural. I have framed it out and about to sheet the inside. Was thinking on using plywood and finishing with food safe epoxy and then line with pond liner, or even fiber glass. Then I thought what about lexan or acrylic sheets? It would allow for some viewing pleasure and be most waterproof.

The question is if I were to go with the transparent sheets and I have spaced the vertical posts only 8 inches apart would the coincide with lowering the thickness of the sheet? As the thicker transparent sheet are really expensive. Or would you still need a thick sheet? Any advice is much appreciated.

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Old 05/15/2016, 03:08 PM   #2
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Any suggestion at all anyone???

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Old 05/15/2016, 05:49 PM   #3
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Location: Jackson Hole Wy
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I would ask in the DIY forum..
i think most ppl use a marine resin. as do a search + check/ask in the large tank section.

welcome to RC BTW...

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Old 05/21/2016, 11:23 PM   #4
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You can also use pond shield which can be purchased from HD.

Google DIY wood aquariums...many many good info.

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Old 05/23/2016, 08:52 AM   #5
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Location: Florida
Posts: 782

This guy did an amazing plywood tank that could help you out. I am considering doing this myself in a few years. If you read though it he breaks it down on how he did everything and Im sure you could get some idea from it. Hope it helps and keep us updated

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acrylic, big tank, lexan, waterproof, wood

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