Advice on polystyrene underneath tank

Discussion in 'Anything DIY Related' started by AndreM, 1 Feb 2012.

  1. AndreM

    AndreM

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    I'm putting together a frag tank and bought a tank, stand and sump second hand which needs a bit of work before it's up and running again.

    It's a steel frame with a center support, 1220mm x 450mm x 450mm. The wood and polysterene needed replacing and I've already replaced the wood with new ply and treated it with sealant.

    My problem is with the polystyrene. Because the tank is 1220mm wide instead of the standard 1200mm I can't find a piece that is just the right length. I currently have two 1200mm x 450mm pieces of polystyrene and I'm thinking of just cutting it so two pieces cover the base of the tank.

    Do you see any problems with doing this? And should I cut it into two 610mm x 450mm pieces so the seam is in the middle, or keep one piece intact and have a small 20mm strip on the one side?
     
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  3. RiaanP

    RiaanP Moderator

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    there you go
     
    viper357 and AndreM like this.
  4. AndreM

    AndreM Thread Starter

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    Thanks Riaan
     
  5. RiaanP

    RiaanP Moderator

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    Just take similar pieces with same density
     
  6. viper357

    viper357 Admin MASA Contributor

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    A lot of my tanks are on polystyrene that is made up of 2 halves, never had an issue with it.
     
  7. VicZA

    VicZA

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    sorry, I know this is an old thread ... but what is the purpose of the polystyrene under the tank anyway ? Is it a necessity ?
     
  8. 459b

    459b Moderator MASA Contributor

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    Yes it is. Helps to prevent heat loss as well as stabilize any minor uneven ness the tank/stand might have
     
  9. the fish

    the fish

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    Also if there is no polly underneath it and there is a small.rock or something that you didnt see you could suffer a crack in your base
     
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