put together a tank but hit disaster
So I am making a mini reef or so I thought. I had everything set up and found someone who had some ex-live rock. He was giving it away. He had it in his tank for years and it was full of life but he let it dry out. He gives it to me saying that he cleaned them all. Now my tank has little dead creatures floating around and my cycled water is yellowish. I have my filter working and left it overnight hoping it would be clean. It is a little cleaner now but I dont know what to do.
I have nothing living in the tank except for the sand. I wanted to let the tank cycle for a month or so before I added stuff.
Do you think this will clear up after a few water changes?
Is there anything I can get to help the clean up? (like a small clean up crew?)
Any advice would be great.