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Old 11/09/2017, 06:51 AM   #1
huig
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One-part polyurethane on plywood tank?

I wonder if this can be used on a marine tank?

I know it can be used on fresh water tanks. This is normally used for pond and water storage tank construction.
Something like Impermax

I m building a 4000 l plywood tank. The bottom and sides are coated with several layers of glass fiber and epoxy.
I made the misstake to add internal bracing in the corners. It is impossible to coat this without air bubbles.

Thanks


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Old 11/09/2017, 09:46 AM   #2
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Pics please! What are the dimensions? Wow, really want to see how this turns out.


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Old 11/09/2017, 09:58 AM   #3
huig
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Tank is 300/130/115 cm

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The metric system is the tool of the devil! My car gets 40 rods to the hogshead and that's the way I likes it

Current Tank Info: 300 g tropical sunlit reef, 100 g algae biotope, 120 g Mediterranean tank and 300 g North sea tank and 400 g deepwater reef
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Old 11/09/2017, 09:59 AM   #4
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Internal braces mega mistake

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The metric system is the tool of the devil! My car gets 40 rods to the hogshead and that's the way I likes it

Current Tank Info: 300 g tropical sunlit reef, 100 g algae biotope, 120 g Mediterranean tank and 300 g North sea tank and 400 g deepwater reef
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Old 11/09/2017, 10:01 AM   #5
huig
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I know polyurethane is used in zoos and aquaria but if i revalidatie these are normally 2-part coatings.

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The metric system is the tool of the devil! My car gets 40 rods to the hogshead and that's the way I likes it

Current Tank Info: 300 g tropical sunlit reef, 100 g algae biotope, 120 g Mediterranean tank and 300 g North sea tank and 400 g deepwater reef
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Old 11/10/2017, 09:09 AM   #6
huig
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Just found out that Impermax QC used in construction isvhas 'strong resistance to permanent contact' with a saturated saline solution.
So i guess Impermax could be used.


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The metric system is the tool of the devil! My car gets 40 rods to the hogshead and that's the way I likes it

Current Tank Info: 300 g tropical sunlit reef, 100 g algae biotope, 120 g Mediterranean tank and 300 g North sea tank and 400 g deepwater reef
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Old 11/10/2017, 12:02 PM   #7
der_wille_zur_macht
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I'm sure the poly tank liners would be fine but I don't understand why you can't just use epoxy. If it's too thin, just add a thickener until it'll do what you want. Do a few coats to avoid pinholes from bubbles and you're all set.


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Old 11/10/2017, 03:34 PM   #8
huig
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The glass mat 220 g is difficult to lay without flaws over the internal braces.

Tomorrow I ll do some sanding and asses the situation


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The metric system is the tool of the devil! My car gets 40 rods to the hogshead and that's the way I likes it

Current Tank Info: 300 g tropical sunlit reef, 100 g algae biotope, 120 g Mediterranean tank and 300 g North sea tank and 400 g deepwater reef
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Old 11/10/2017, 03:43 PM   #9
der_wille_zur_macht
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I wouldn't worry about having glass mat on every surface, just coat with the plain epoxy.

If you want the glass, I would cut it in precise strips so you're not folding over the corners or seams. It should lay flat just fine as long as you're not trying to form it over a corner.


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Inconveniencing marine life since 1992

"It is my personal belief that reef aquaria should be thriving communities of biodiversity, representative of their wild counterparts, and not merely collections of pretty specimens growing on tidy clean rock shelves covered in purple coralline algae." (Eric Borneman)
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