I went out and trapped some shiners and filled my bucket with fresh river water and I am using my aerator and took them home. I got my small bait tank ready and dumped my clear river water in my tank and turned on my bilge with a 3/4 pvc pipe that leads to where my water spills into my traugh (spelling) that has two 3/4 90's on the bottom spilling water back in the tank. I put the activated carbon in my traugh along with my filter and my water turned to a murky grey look. Can anyone tell me what I am doing wrong? The shiners seem to be okay. I didnt think the water would discolor like that, I thought it would stay clear.