Some interesting points have been made.
I was only planning on putting small(ish) sections of Egg Crate (EC) under the rock and not over the entire bottom. I'd like snails, my sea star, bulldozer shimp/Goby to be able to dig away without the impediment EC might cause.
The though was that where there was rock, the EC would displace stress and PREVENT any/all of the aforementioned critters from undermining it and causing issues.
The acrylic is a really good idea too as is the ABS -but I've been told not to put ABS in a tank but I'm sure a few bits under sand wont' hurt anything.
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-Mark
29 Gal Bowfront w/24" LED Lights. DIY HOB Sump (5.4 Gal) MP40. Orange Spotted Watchman Goby, 2 Clownfish and a few hermits.
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