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#1
12-06-2011, 04:44 AM
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I think you'll be perfectly fine, I've setup a few tanks on tile before in similar situations and never had an issue. As long as the tile was installed correctly and it's not a delicate natural stone you shouldn't have any issues. With tile your subfloor has to be at least 1.25" thick so it's strong enough to resist any deflection from that kind of load. If the tank is about 16 square feet that's only around 60lbs per sq foot, just be sure the stand distributes the load evenly (foam would be a good idea).
If you're that worried about it bridge some small beams perpendicular between the two joists where the fish tank will sit and attach them to both joists and the subfloor. Putting in that yellow section won't help you though, the joists are plenty strong as is and your only concern would be the small sag from the tank sitting between them but like I said with that subfloor it's a non issue. Last edited by sphelps; 12-06-2011 at 05:49 AM. 
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#2
12-06-2011, 04:58 AM
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Its all about pressure, floors are rated in the amount of pressure they can take. Your tank has a massive foot print, for not that much weight. Lets say the weight of your tank with stand and rocks and everything is about 2000lbs, the foot print of your tank is (120" x 20") 2400"^2. So the load on your floor is 0.83 Psi, which is not very much at all.
My tall 190 Gallon tank has a load of about 3 psi. So I had an engineer come in and he said in my case it was required, and recommended a soultion.
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#3
12-06-2011, 05:31 AM
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Here is with all the heating pipe and drain
which makes it is more challenge to put small beams between the two joints.
__________________
155 gallon bow front
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#5
12-06-2011, 05:47 AM
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Quote:
Distance between two panels of joints are around 18 inches, distance between 2 joints are 16 inches
__________________
155 gallon bow front
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#6
12-06-2011, 05:50 AM
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Quote:
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