Internal Sump...with Plywood? - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 07-06-2012, 02:59 PM Thread Starter
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Internal Sump...with Plywood?

Hi, first post here, though I've been reading for months.

I just bought a 20L to upgrade from my current planted 10g, and I was inspired by a member here to try an internal sump.

Since I may someday attempt a plywood tank for my turtles, I figured this could be the first baby step in learning the process. I have enough plywood laying around that this won't require me to purchase any, so it seemed worth asking about. A black rubber coating would also serve as a nice background, to boot.

So first, what are people's thoughts on this? I realize I'll likely end up spending more money to do this than buying a used canister, but I like the idea and it sounds fun to try.
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post #2 of 6 (permalink) Old 07-06-2012, 04:37 PM
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I've not tried it for tanks or sumps but outside , the plywood moves around and it is hard to keep it sealed. A flexible rubber lining may do it well enough.
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post #3 of 6 (permalink) Old 07-06-2012, 10:48 PM Thread Starter
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Quote:
Originally Posted by PlantedRich View Post
I've not tried it for tanks or sumps but outside , the plywood moves around and it is hard to keep it sealed. A flexible rubber lining may do it well enough.
Thanks for the response. That was one of my main questions. What have you used it on?
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post #4 of 6 (permalink) Old 07-07-2012, 01:58 AM
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There are a lot of successful plywood tanks out there, so there should be no question that they can be done successfully. You do have to do it right, and don't expect any cost savings until you start making really big tanks.

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post #5 of 6 (permalink) Old 07-07-2012, 03:58 AM
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I tried an outside pond using scrap plywood and did not do enough bracing to keep the wood from moving and cracking the liner I had painted on the wood. Younger day with less experience.
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post #6 of 6 (permalink) Old 07-07-2012, 06:11 AM
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Making an internal sump with plywood might work, but I would think a sheet of glass would be thinner, and easier to work with. Measure, have it cut at a glass shop, silicone it in.

You could paint it if you want. There are paints that are safe inside a tank.

You could use acrylic, too. Silicone does not work very well on most plastics, but you are not expecting any strength, just some sealing. Acrylic is even easier to work with than glass. You could cut it yourself, drill holes as needed for your sump, change it if you found it blocked too much water flow...
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