Hi, I am very new in this hobby; I hope you guys can give me some advice to help me out.
recently I had bought some Live rock from pasir ris farm, I discover one of the rock were attach with some decay sea sponge, I ask the shop keeper, he told me is ok just remove it will do so I did what was told and after that I put those rock in to the tank with water that had condition for about a week. Next day the rock came alive with many thing craws out and other sponge are decay too the water is giving out a bad smell. What should I do now? Change water and throw away all the rock? Please advice.