Great pics!!! Love all the LPS!!!!! You have some very nice zoas too!
I used eggcrate under my rock work too, in my 90 gallon. I did it mostly so that when my engineer goby digs his 'passages' he wont upset the balance of things. One draw back I found to it so far was trying to keep a long tenticle anemone that really wanted to put its foot in the sand, but it kept hitting the eggcrate and got frustrated, finally, after a few weeks, I found it floating around this morning, I felt bad for it, so I brought it back, I'll have to get a bubble tip, or something, that wants to be on the rocks.