F.W., you're a good man (woman?). You've made me a believer. I decided to get maybe 15 pounds or so of the true live rock, and then enough base rock to cover the rest. The main reason that I didn't want to is that I really like the whole mystery bag the live rock is, which is something that you never encounter in freshwater, which is all that I've kept. Maybe I'll still get lucky. Like finding a prize at the bottom of the cereal box!