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120 Gallon Tank on 2nd Floor


Zwickm

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Have any pictures of the framing before the sheet rock went up by chance perhaps from previous owner?

 

Can you run it perpendicular to the joists instead of over 1 or 2?

 

Can you build the stand with studs right over the floor joists?  

 

If so, personally I wouldn't sweat it.  My office tank on the second floor is a 240 + 100 gallons of sump.  This happens to be centered over a massive laminate beam though, I mean massive.  It is also over the garage, and we have the option to add a post.  So I am definitely not recommended 340 gallons in 16 square feet in general, but it worked out in my case.

 

What is below it?

 

Good luck!

 

PS:  There are tons of good posts out there that say it won't work, so keep it in mind, it is a risk for sure but one I would probably take given the conditions above.

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If your builder used and built to code, your second floor has the same 40 lbs/sq. ft. designed load as the main floor.  The other issue is water damage, but you could control that like they do with second story or attic HVAC installations, use a drain pan.  You can make it slightly larger than the stand and paint it black.  You can glue trim over it as well.  It has a drain you will have to put through the wall, or run to a drain.  I have seen one person using a condensate pump to get any water outside.

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I can post pics in a couple weeks when I have the keys. I figure it'll weigh around 1500lbs total, giving a bit of extra in case.

 

I wanted to go with a 48x24x24 size but I'm thinking a longer 120g would be better since it'll span more floor joists.

 

I would put a water proof rubber material underneath to prevent water from touching the floor.

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