Thanks for the response! It is definitely heavy loads of leaf and other organic debris entering the pond from runoff and leaves falling from trees. It is a 30+year old lake in an urban area surrounded by mature trees.
I posed the tilapia option to the lake board, but got shot down. After removing 800 pounds of dead fish that appeared in a 24 hour period after the last fish kill, there were some reservations about the lifecycle of tilapia and performing annual clean out. I still think this would be a logical option for managing algae, especially the FA.
The reference you mentioned that threw me off was the relationship between tilapia and muck reduction.
