Are you having issues with clarity of the water in your pond, why not try a pond bomb. Simply drop the bomb directly into your filter or pond, it can also be used when starting up a new filter, as the high concentration of bacteria will help to remove the harmful ammonia and nitrite, allowing the filter media to mature. 
 
Award winning product, at the AQUA 2010 show in October 2010.
 
Intensive, fast acting treatment for all ponds. Helps to achieve crystal clear & healthy water.
 
Treats up to 20,000L