I would think the amount of LMB for your pond is too high.

That may be shown by the smaller size of LMB that you are now catching. 50 LMB stocked twelve years ago would have exploded, population wise, several times over, especially with no higher end predator to keep the LMB in check.

The CC might have helped in keeping the LMB in check up to a certain size of LMB.

I'm sure a fairly concrete plan can be worked up if you give us some detail on the goals for your pond.


Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."