Large plywood build - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 08-27-2014, 03:41 AM Thread Starter
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Large plywood build

I've got a space in my 'Florida room' that I'd like to fill with an aquarium. I'm aiming for something simple, plants with hardy fish. I don't want to heat it and I may not provide any more light than what's available through the windows. I know it gets hot in the summer, which I could take the edge off with some ventilation, but I'm not sure how cold it will get in the winter. So, aside from the general questions, I'm looking for engineering advice. Here's a schematic I've cooked up on my own. See any flaws?









The design uses 2x4's and 1/2" plywood. I intend to paint the whole thing to waterproof it, then use a pond liner inside. After that, I'll finish the outside with some nice paneling or a decent paint job. I'm still debating on whether this tank needs legs. Any advice is welcome.
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post #2 of 7 (permalink) Old 08-27-2014, 04:08 AM
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Not sure if the corners will hold. One thing would be to use a double top plate like you would build a wall with the top plate overlapping the bottom for strength.

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post #3 of 7 (permalink) Old 08-28-2014, 02:22 AM
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Looking down from above is not normally the best way to watch fish. With solid walls to block their getting used to people around, I would expect them to duck for cover any time a head showed over the side.
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post #4 of 7 (permalink) Old 08-28-2014, 03:05 AM Thread Starter
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Quote:
Originally Posted by PlantedRich View Post
Looking down from above is not normally the best way to watch fish. With solid walls to block their getting used to people around, I would expect them to duck for cover any time a head showed over the side.
It seems to work well for ponds...

Here's the updated design.
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post #5 of 7 (permalink) Old 08-28-2014, 01:49 PM
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My thinking on the difference in ponds versus tanks is based on why and how I look at ponds versus why I look at tanks.
A pond is an area where I look at the overall scene and a few fish like large Koi add to that scene. With large fish , there will often be some of them darting in and out or begging for food.
In a tank, we rarely have large fish like Koi but we do stop to look at the fish as we can see them well through the sides and they can see us so that they become less prone to hiding.
Since your tank plan will not support a group of large Koi, my concern is that the normal size tank fish will be very difficult to spot. For a place to grow plants that extend above the water, I would think this would work but for a fish tank to view fish, I would not bother.
Your views are free to differ of course but I just see a lot of work for a poor end result.
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post #6 of 7 (permalink) Old 08-28-2014, 05:01 PM
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1, How's the tank going to be filtered?
2, Is there a reason why one end is 3' wide while the other end is 2'?
3, Adding legs will only lead to heavy bracing for the bottom tank floor.
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post #7 of 7 (permalink) Old 08-29-2014, 12:03 AM
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There are a few large plywood builds on this site. You might want to check out their threads, and do some googling, too.

There's a lot going on with this from an engineering perspective - more than can be addressed in a quick response to your post.
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