Hello fellow fish fighters
I have a 1/4 acre pond that is surrounded by Eucalyptus trees. An asian friend of mine says the leaves are toxic to fish?
Any truth in that?

Are there certain leaves that are toxic to fish?

Lots of tress means lots of dead leaves in bottom of pond, so after a couple decades, I have a good amount of decomposing sludge of leaves in the pond bottom. Ive been trying to figure out how to get a backhoe close enough to the water edge to dredge a little, but still would not be able to reach very far, even with an extended arm reach of the backhoe of some 20 feet.
Does anyone know how to resolve this?
thanks