Eggcrate Under Sand ?

[DiverDude]

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....