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Old 09-14-2011, 12:45 PM   #1
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2x4 tank stand for 75 gal.

I'm getting started on planning my 75 gallona aquarium stand. I've made one previously which work great, no problems with it. I waa wondering though, how far apart I can space the vertical 2x4 between the corners? The one I'm using now has 2 vertical supports evenly space from the sides. So 48" divided by 3 (the number of open spaces / cabinets) is 16". Is 24" too far apart for the load of the fish tank on the stand? I.e. Only one vertical support under the center of the tank?

I will add a simple drawing when I have a chance.
Thanks in advance, I hope my description isn't too diffucult to understand.
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Old 09-14-2011, 01:49 PM   #2
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Depending on how you plan to construct your stand, you will not need any vertical supports besides those at the corners. I have a 125g tank: 60"x18"x26". I've made a diy stand using 2x4 and 2x6s. There are no vertical supports except for at the 4 corners. The load of the tank is being supported only by the corner supports. I haven't had any problems with it.
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Old 09-14-2011, 03:07 PM   #3
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Here's the best drawing I could do using a piece of paper as a straight-edge and I apologize for the quality of the photo my phone took.



Well you can see I've got the long 2x4s for the lengths of the tank and they attach outside (above and below) the shorter 2x4s for the depth (or width? anyway, not height) Another set of the shorter 2x4s are cut minus 7 inches to fit inside the long 2x4s so that the top and bottom are flush with the tank and floor. I did not draw in any center supports but I'm thinking just a center one should be suffiecient.
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Old 09-14-2011, 03:36 PM   #4
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I had an old stand similar to this design using 4x4s. Unfortunately one warped and that was the end of my tank. Can i suggest to use two 2x4's at each corner instead? Also, is there any reason that there are 2x4s along the depth (bottom left and right of picture)? Wouldn't it be stronger to have 4 pieces of 2x4s as your bottom in one plane, and have the vertical corner supports attached to the bottom frame?
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Old 09-14-2011, 04:32 PM   #5
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I don't know why I keep only drawing the bottom and cutting off the top...

Anyway, When you mention putting two 2x4s together, I just want to make sure I understand that you mean as in a “4x4” and not perpendicular to make an “L” shape. I wish I’d known that before, makes me wearing about a leg twisting and 75 gallons of water going everywhere.. As for using four 2x4s together in a single plane, they are in a sense. At first I considered cutting the corners at 45 degrees to join them but was concerned that if there was any twist or warping they wouldn’t join flush. So my design was to use the ~18” 2x4s (Red Boards) to attach the legs for the depth and then using the ~48” 2x4s (Green Boards) to attach the lengths which go “over” the 18” boards. Then because there would be a 1.5” gap under the 18” boards, I cut 18 minus 7 (the width of two 2x4s) and use them to fill that space (Cyan boards). Also when I get home tonight I’ll take an post a picture of my current stand. I drew that in paint pretty quick so I help i gets the idea across. In effect it does make a full footprint on a single plane, it just take 2 layers to attach to the legs. But as I think about it, by putting two 2x4s in the center, that should be enough support. I don't mind doing it in thirds like my current one, but I will I had better access to the storage under the tank.

Thanks for the input so far, I very much appreciate it!
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Old 09-14-2011, 05:08 PM   #6
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Lose the 4 x 4 as they warp like crazy. Also when you lay 2 x 4 on it's side, there is a better chance of it warping, and it doesn't have near the strength of a 2 x 4 on edge.
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Old 09-14-2011, 05:13 PM   #7
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Yeah. Have the 2x4 on edge.

And as for the 2x4's, I do not mean as in a 4x4. I do mean having them perpendicular as an L shape. Having them in an "L" shape will give your stand more stability.
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Old 09-14-2011, 05:20 PM   #8
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Will post a picture of my stand in a bit. Hopefully it will make more sense then.
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Old 09-14-2011, 07:18 PM   #9
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Here's a picture of the stand. Hope i'm linking it correctly.
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Old 09-14-2011, 08:04 PM   #10
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That's great, I really like it! Here's what I have on my current 75 gal stand. I actually ended up doing it differently that I had originally planned, which is what's shown above.



You can see the 4x4 is vertical and next to it is a 2x4 for the stand's depth. Under and on top of the 4x4 is 2x4.



This is the stand, you can see that on either side of the center opening is paneling and behind either one is 2x4. You can see the doors are rather skinny. I should have used thinner 1x boards for that trim. So really there is plenty more support for the tank than just the 4x4s.

But I like you're frame. Very simple but definitely built solid.
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