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  2. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
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rocks -- heavy rocks

Discussion in 'Are you new to aquatic plants? Start here' started by tedr108, Dec 3, 2007.

  1. tedr108

    tedr108 Lifetime Charter Member
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    Another newbie question...

    I am in processing of collecting decor for my tank. The only free rocks (and I need free right now) I have available to me are granite. They look decent, but I am concerned about the weight. They are not boulders, but I could end up with 20 - 30# of rocks easily, since granite isn't exactly light. So, my question is: Since the tank frame lifts the bottom glass up from touching my stand's top surface, isn't it possible that the rocks could crack the bottom glass? Should I try to find some sort of rubber mat or something and cut it to fit just under the tank?

    My tank is only 36x15x16 and the glass is 1/4" thick, as far as I can tell.

    Thank you for your time...
     
  2. VaughnH

    VaughnH Lifetime Charter Member
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    Unless you are planning to nearly fill the tank with rocks it isn't likely that they will damage the tank. Their weight is reduced by the rock volume in water - a half cubic foot rock will push on the glass with its weight minus the weight of a half cubic foot of water (31 pounds). However I suggest you not drop a rock in the tank, just gently place it in position. I use granite rocks in my 45 gallon tank, with no problems.
     
  3. Tom Barr

    Tom Barr Founder
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    you can also use a styrofoam pad under the sediment.

    But adding it after the tank is set up?
    Bit of an issue..........

    Regards,
    Tom Barr
     
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