Additional techniques
�Algicides
�Temporary, toxic, expensive
�Aquatic Plant Harvesting
�Not enough phosphorus in biomass
�Physical Liners
�Application is difficult & expensive, lake size
-ALGICIDES:  kills the actual algae cells
   TEMPORARY -repeated application often within the week
   TOXIC copper sulfate -devastate ecosystem
   EXPENSIVE

-AQUATIC PLANT HARVEST: removal of phosphorus containing biomass in plants in water� in addition to serious ecological impacts of harvesting,  with the size of 3MP, not enough P in biomass to make a significant reduction and to make harvesting worthwhile�

Purely physical/barrier that caps the phosphorus within the sediment�
Requires Small areas and no disturbance so seal isn�t broken
Application of liners is difficult in a lake the size of Threemile & also very expensive