What weight will the bottom of a tank take?

mr. luke

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7 Dec 2008
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Anyone have a rough idea of how much weight an aquarium base could take?
Id like to try the large 'master stone' arangement in a 120l...... but i dont know if the base will like me for it :rolleyes:
i could place polystyerene on the base if that would help ;) i think the base is 6mm glass.
 

Ed Seeley

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3 Jul 2007
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Rocks don't really weigh much more than the water so the actual weight of them isn't really an issue. It's the point load of a rock resting on three or more points in the tank that can cause problems. So adding something to spread the weight out is a good idea, but I'm not sure I'd use polystyrene in the tank as it could break apart. Maybe pond liner underlay or just sand or planting substrate?
 

zig

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4 Jul 2007
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I've used polysyrene in the past (lots of it) and it can get a bit messy after a while especially if you move things around a bit later on or are using lots of rocks, but still a very workable solution IMHO. Recently another solution that I have used is to get a sheet of perspex and cut it to the size of the bottom of the tank, this works very well :thumbup:
 

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