Rock Fall! EEEK!

[Mattgesy]

So When i put my tank together i put the rock on top of rock and made sure that it would not fall, but it did! over time i guess that rock get soft, took out almost everything in my tank, all the fish/inverts are fine and alive! which is good and my corals got it hard. alittle shock for most of them but most my huge toad stool, it took a chunk right out of it! do you think it is alright?