It seems to come down to a few criteria:
-Concern over pressure points on the glass
-Bottom breakage due to falling rock
If you're not particularly concerned with either of those, then there's no reason to put eggcrate at all !
I can't say I'm seriously concerned about pressure points and I'm not concerned at all about falling rock; it's just that in this tank, I've got more depth and can afford to pile more than a few rocks high and thought that perhaps the additional weight may pose a little more risk. I think that I'm not giving glass enough credit for it's strength....
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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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