thank you for your answers!

the pellets are originally made for trout.
I think there is a lot of proteins in the food.
Yes I have plenty of natural food in our lake.
There are also live carps and zander (pike perch)
in the water.
The lake has about 1,5 hetctare (15.000 square meters),
a deep of maximum 10 feet.
There is a lot of cover for LMB (wood, plants and so on)
Pictures are following...