New Tank questions

[Reefer Rob]

"Base" rock to me is the petrified rock that is as hard as glass and about as impervious. I still have some in my garden from my first tank Dry rock like Marco rocks is soft and porous, and will eventually work just like live rock with time. I don't like to fill the tank up with rock so there's no room for the fish to swim, so I don't see the need for "base" rock.