Crystal clear water with Bayrol Superflock. The finest pollutants and turbid matter are not normally retained by the sand filter. This is not the case if you use Superflock: Through a process of continuos circulation, Superflock forms clusters as it moves towards the filter, which encapsulate the finest pollutants and turbid matter. These clusters, which contain the pollutants and turbid contaminants, are retained in the filter. The water becomes crystal clear. In addition, the new formula removes iron, manganese and copper ions as well as phosphates from the water.