yeah, i figure a good 2 weeks by itself with minimal lighting should do the trick. i put about 2 pounds of cured purple live rock in the tank last night to start seeding my sandbed. the rock was *covered* in little bugs scurrying around, a few starfish came out later at night and even a few micro snails came out of the rock. real interestng to watch, cant wait till i fill the tank up with rock come this thursday!