I just got 3 Lbs. of live rock and 7 Lbs. of base rock , and i was wondering how long it will take for my base rock to look like my live rock. and if there is anything i can do to speed it up . And I also have a question about my tank cycling , I took a water sample to LFS and they said my cycle was already done and my tank is ready for new fish if i wanted to put some in , but my tank has only be up and running for 18 days. I always thought it took atleast 5 or 6 weeks for it to cycle. but i saw the tests and my ammonia was 0.0 ppm , Nitrites 0.0 ppm, and pH 8.2 .