Covering your pond is very important to keep out the autumn leaves as well as predators. In autumn and early winter, ponds can easily become clogged and overrun by leaves and debris. They settle to the bottom of your pond, degrade and release toxins into the water, harming fish and beneficial bacteria and disrupting the whole balance. Plan to cover them early, after a thorough cleaning, to guard your backyard pond. Nets and covers will protect your pond all winter long!