Back again, the last post missed vital points to my arguement for deciduous trees as I was sidetracked by a visitor.

Leaf litter in a pond assists in removing nitrates and enhances aquatic insect diversity. There have been many studies in NZ alone pointing out the benefits of leaf litter to a waterbodies nutrient cycle.

More insects means more free fish food. Increased nutrient cycling means less 'waste' - the more toxic compounds of wastes in your water will be converted faster, making life better for your fish.

Many fish species spawn in leaf matter on the sides of water and the fry often require plankton found in vegetative shallows to be 'weaned' on.

Nother visitor, got's t go.