I have a noob question about all this... I've never used this stuff, so forgive my ignorance, but when you talk about curing the foam, you mean air-curing, right? Not underwater? Is there any way to include LR in a foam structure without letting the rock dry out and die first? I was thinking of doing a foam/PVC/LR structure in my new tank, but I don't want to kill 150+ pounds of well-aged live rock to do it! And if the 14 days of curing does have to be dry, can you recommend any place that sells nice dry base rock for this sort of project? Thanks!