Last Friday I applied 200 pounds of Aluminum sulfate and 100 pounds of lime to my extremely muddy 1/3 acre (est. 3 acre-feet) pond. I applied it by slowly dispensing into the prop-wash of partially submerged trolling motor across the full surface area.

Unfortunately I see only a little improvement in water clarity.

Questions:
1. Do I just need to apply more alum?
2. My PH before and after application was over 8.2 - do I need to bother with any more lime if I apply more alum?
3. After application I had a lot of 3-4 foot "islands" of flocculate on the water surface - I broke them up with the trolling motor - should I have done that? I still (4 days later) still have some small "islands" on the surface - is that normal?
4. Could I have gotten better results by pre-dissolving the aluminum sulfate in a bucket and then dispersing? I was very careful to slowly dispense the aluminum sulfate into the prop-wash. I spent 3-4 hours to apply the 200 lbs of alum.