so I stated my tank with BRS reef saver dry rock. I miss the diversity of having all kinds of cool critters. I was thinking about ordering 20 pounds of live sand and 30 pounds of live rock from Tampa bay salt water. I would use the 30 pounds of LIVE rock and remove 90% of the rock I have now. My question is will I kill the fish in my tank due to a cycle? I know tons of people report not even having a cycle when use Tampa Bay Saltwater rocks. And yes I know the risk of getting unwanted hitchhikers.