i lost my 125 gallon tank from a leak. i saved the rocks and sand. the rocks r in my 29 gallon with the live stock and algae. also have some in a trash can with a air stone. my sand is not that lucky i just have it in 3 buckets i know the live is dead cuase it smells like eggs, but can i reuse the sand by just CYCLE the tank longer.also is the rock in the bucket with the air stone ok.