Yes. Aeration eliminates the effects of decaying grass clippings. Over time, diffused aeration will also dissolve leaves in your pond. This is because strong aeration will produce the elevated aerobic conditions that are necessary for bacteria to digest leaves. Much dissolved oxygen is required to dissolve all leaf parts. A proper aeration system has triple-action synergy! Obviously, your pond water absorbs small bubbles emitted from the diffusers. Also, aeration reduces films and surface tension to help your pond breathe deeper. Lastly, hydrodynamic lift-force creates a fan-like current to mix the deepest water with the whole pond.