as we all know, Live Rock isnt cheap. why would someone put live rock in their fuge where it cant be seen. how can it help more in the fuge than if it was in the display tank. Whats the diff? Plus, the lighting in a fuge is rarely as good as in the display. which wont really bring out the sponges or anything else coll livin on the rock. it seems kinda silly so there must be a reason i cant figure out.