Cupped wood floor, need anything under the stand? - The Planted Tank Forum
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post #1 of 22 (permalink) Old 09-14-2011, 03:57 PM Thread Starter
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Cupped wood floor, need anything under the stand?

Hi Folks,
The location I'm setting up the tank and stand has wood floor which is a little cupped. I would like to put something under so the stand can rest on. What shall I use? something takes the weight good and does not absorb water?

ideas?
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post #2 of 22 (permalink) Old 09-14-2011, 04:04 PM
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What size tank?
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post #3 of 22 (permalink) Old 09-14-2011, 04:22 PM Thread Starter
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40B. Here is the picture of the set up.

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post #4 of 22 (permalink) Old 09-14-2011, 04:34 PM
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Get "wood shims" at Home Depot which are made precisely for the purpose of levelling furniture, door frames, etc.

My hardwood floor was sloped downward to the front of the tank but dropped in the opposite direction at the back. As a result my tank stand is shimmed nearly half an inch off the floor all around to make it level!!

I have 2-3 shims on both sides, one on each corner, 2 In the front, and 4 in the back. ALL weight is on shims, the stand does not directly touch the floor. This prevents twisting stress on the frame.

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post #5 of 22 (permalink) Old 09-14-2011, 04:35 PM
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But will it bow more under the added weight?

I've never lived in a house that didn't have concrete floors. Exception was about 1 year rooming with a friend in a mobile home. That would have required more jack stands. lol
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post #6 of 22 (permalink) Old 09-14-2011, 04:41 PM
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It might bow over time... If it bows right when you fill it, take some measurements, drain and reshim.

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post #7 of 22 (permalink) Old 09-14-2011, 05:17 PM
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Can you check if the joists are properly spaced ie from basement?
One thing I'm concerned with is the weight of the tank filled. And it could just be the house settling or it could be an indicator of other issues.
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post #8 of 22 (permalink) Old 09-14-2011, 05:56 PM Thread Starter
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Can you check if the joists are properly spaced ie from basement?
One thing I'm concerned with is the weight of the tank filled. And it could just be the house settling or it could be an indicator of other issues.
40B should be OK. I'm more concerned about the cupped floor planks. They are not perfectly flat. I'm thinking putting a piece of thin rubber mat or something like that underneath, but not sure what to use.
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post #9 of 22 (permalink) Old 09-14-2011, 06:04 PM
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How big is the gap?
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post #10 of 22 (permalink) Old 09-14-2011, 07:46 PM
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Get a roll of wood veneer, sold for edging plywood. Cut lots of 2 inch long pieces, then start stacking them under the stand in about 6 places, 3 in front, 3 in back. Adjust the number of pieces until the stand is level and firmly resting on all of the shim stacks. When I do this, I then put a dot of glue on each shim to glue them together and to the underside of the stand. Works perfect for me.

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post #11 of 22 (permalink) Old 09-14-2011, 08:04 PM Thread Starter
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Get a roll of wood veneer, sold for edging plywood. Cut lots of 2 inch long pieces, then start stacking them under the stand in about 6 places, 3 in front, 3 in back. Adjust the number of pieces until the stand is level and firmly resting on all of the shim stacks. When I do this, I then put a dot of glue on each shim to glue them together and to the underside of the stand. Works perfect for me.
This is probably the best solution I've leaned so far. Thanks a lot!
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post #12 of 22 (permalink) Old 09-15-2011, 05:21 PM
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I take it you rent? If it's an old house then the floor planks have separated from the joists. This shouldn't be an issue especially for only 40 gallons. If the stand is solid then you will not have an issue. I have the same problem with my floors but mine has a 4 foot crawl space underneath. So when I set up my tank I went and bought a 2x12 and cut it in half and sandwiched a piece of 3/4 in plywood between to support underneath the joists. I have no more floor issues

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post #13 of 22 (permalink) Old 09-15-2011, 05:28 PM
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You are only looking at around 450-500 lbs so your floor joists will hold it you shouldn't worry about a bow in the floor unless it's over 1/4 inch. If that is the case then go get a hard rubber shop mat. It is soft enough to compensate for the bow but hard enough to not compromise the tanks balance

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post #14 of 22 (permalink) Old 09-15-2011, 05:29 PM
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OR you can use a piece or corrugated plastic or gatorboard.


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I am here: http://maps.google.com/maps?ll=36.615662,-88.302899

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post #15 of 22 (permalink) Old 09-15-2011, 08:17 PM
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Quote:
Originally Posted by SBPyro View Post
Can you check if the joists are properly spaced ie from basement?

+1

I used to frame houses back in the day and a floor should never "cup." That's almost certainly a problem with either the floor joists or the underlayment.

You didn't mention how wide the cupping is but if it is longer than 2ft than it's likely the joist. Otherwise it's the underlayment.


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