Weight of DSB on Glass

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by Hammerhead, 26 Apr 2012.

  1. Hammerhead

    Hammerhead

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    Hi Guys,

    I built my sump out of 6mm glass. The DSB compartment is 750 X 550 with the sump being 1200 x 550.

    On the DSB calc using Aragonite I need 197 Lbs (about 90kgs). I know about the whole weight dispalcement and all that but surely some stress will be placed on the galss. I intend using reggies playsand i believe its denser than aragonite. will i need the same weight of sand for my dsb?

    Do you guys feel a 6mm base is asking for trouble?
     
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  3. mariusmeyer

    mariusmeyer

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    If the sump is supported on a solid surface like it normally is then its not a problem. Most 4ft sumps are 6mm glass in anyway.
     
  4. Hammerhead

    Hammerhead Thread Starter

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    Thanks.

    The sump will sit on supports and a 18mm shutter ply + a 40mm polystyrene (Medium to High Density)

    Any idea how much playsand i'll need for a dsb to fit in the area
     
  5. mariusmeyer

    mariusmeyer

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    I would start off with 60Kg.
     
  6. Hammerhead

    Hammerhead Thread Starter

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    Thnaks.
     
  7. Lord_Blackadder

    Lord_Blackadder

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    Playsand (silica) is a bit less dense than aragonite.
     
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