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  1. n

    natpodu77 New Member Member


    I have a 55 gallon tank that I am making a background for out of extruded foam and I have read a lot of other posts where they recommend making the background smaller by an inch around to accommodate the cement, however I am using Drylok and painting about 4 layers directly on top of the foam and was wondering if this would apply to my background as well?
  2. Aquarist

    Aquarist Fishlore Legend Member

  3. OP

    natpodu77 New Member Member

    I am not using quickcrete, but drylok exclusively-so this link did not help me answer my question. Also I am adding this to an established tank, not an empty one, so I really have to get the measurements correct.

    Does anyone have a recommendation as to how much space I should be leaving to accommodate buildup of drylok on the styrofoam?

    My tank is 48"L by 21"H should I take off 1/2" all around the styrofoam background for the Drylok? I was going for about 3 solid layers with a final layer for detail color.