The Planted Tank Forum - View Single Post - DIY 90 Gallon Tank Stand- Styrofoam/Cork?
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post #4 of (permalink) Old 04-25-2013, 02:17 AM
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Join Date: Jan 2012
Location: Oakland, CA
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I think it's generally a good idea to use foam or something under the tank, mostly it just avoids imperfections causing stress points.

I don't think using a whole sheet should be an issue, but if you are really concerned about it, you could just cut out the center. -I've done this many times before, but mostly because I want to occasionally look at the bottom of the substrate (even though it's not terribly interesting).

Also, you don't need a piece that thick. I really don't think it will cause any problems, but you could go with a thinner piece if that was easier/cheaper.
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