ok it sounds to me i need to get the dam covered with some sort of vegitation, as for the stocking of blue gill at that certain number i am not sure now that u say that how many i got i just know i need to clear this water so they can see the food im thorwing them. How do you apply alum to a pond this size i have a canoe, do i dilute the mixture or just apply it directly to the pond? sorry for so many questions i just dont want to make a costly mistake.