Hakko 12-Way Stainless Steel ManifoldGives the ability to send air to various areas within the pond or lake and allows venting off potential back pressure. Manifold has valves which control the outlet of air to your air stones or diffusers.
Hakko Air Pumps and AccesoriesPerfect for Koi Pond or Small Lakes. Greatly Increases Oxygen Levels. Better Fish Health and Growth. Improves Bio-Filtration and Reduces Algae Growth and Clarity. Reduces Sludge and Saves Electricity. Critical for Aquaculture. Intensive Recirculation System