rock wall, glue it or egg crate?

[nanmer]

Fishward and BMW, how long was the curing time and how often did you change the water? I am looking at a piece approx 48" long and approx. 3ish ft. tall. I can do it in sections but that is still a lot of space needed to cure. I really like the natural look this creates. I guess a bath tub in the basement may be needed.

Marlin, how long has your rocks been siliconed to the back of your tank?

Thanks, this is giving me so many options!