How can I minimize organic decay in my backyard pond over winter?

Minimize organic decay by removing fallen leaves promptly and cleaning accumulated sludge before winter. Use a leaf net and regularly scoop debris from skimmer baskets. Avoid overfeeding fish in late fall, as excess food decomposes quickly. Aeration also helps by circulating water and distributing oxygen, slowing anaerobic decay. These steps reduce harmful buildup, maintaining clear water and balanced ecosystems during winter.