Thanks Bill !! Damn You Have an abundance of Knowledge! I talked with my Local Fisheries Biologist and she recommended running the aerator just at night... I had a pretty high fish loss this winter and after talking to her(biologist) she reccomended running the aerator constant to help remove any unwanted gases that may have accumulated from the dead fish. Then once the Vegitation starts to grow just return to running it at night. She also recommended a few pounds of Fathead Minnows, as they breed often and would feed on the "green" and then in return feed the larger fish...