The major purpose of pond netting is to keep leaves out of the water and to keep predators away from fish.
Obviously, the leaves covering the pond's bottom are unsightly, but that is not the major issue. As these leaves disintegrate, they produce a variety of substances that endanger your fish's lives and stimulate algal development. When pond caretakers lose fish in the winter, they frequently blame it on the cold, but in reality, it's generally due to leaf build-up in the pond. You might be able to get some of the leaves out of the pond before they decay, but you won't be able to get all of them out, Keeping them out with a pond net is by far the best solution.
Leaves will accumulate on the netting and will need to be cleared on a regular basis. Allowing the leaves to remain too long may cause the netting to rip as they become damp and heavy. Simply lift the net over to dump the leaves that are attached to the netting (remove one side of the pond netting and turn it over to the opposing side if it is staked or knotted). To remove leaves that have accumulated on the netting, some individuals also opt to use a leaf blower.
Preventing leaf build-up in the pond will not only ensure that your fish enjoy a safer and healthier winter, but it will also help the pond get off to a better start in the spring.