This is my post from my tank. I started with 100% dead Reefsaver rock and dead mesoflake sand. I can't figure anything else out why my SPS are dying, so I'm going to give the beneficial bacteria / microfauna a shot. I ordered the Zeobak and Zeostart3, but more importantly I also ordered 15lbs of Live Rock from KP Aquatics that should come this week. I heard great things about them, and hopefully that will serve as a good seeding for the tank. I"ll report back with my findings after a few months. You all think 15lbs is enough to seed it?