PondMAX Aeration Kits have been manufactured with advanced technology to provide you with the best quality aeration for ponds or water gardens. PondMAX Aeration Kits are suitable for many different applications including aquariums, fish ponds and water garden applications. Aeration is a very effective method of enhancing pond fish habitats, improving water quality, reducing algae, controlling ice and removing phosphorus. Aeration can also break down unwanted bacteria, help with mosquito problems, and remove foul odors from an aquarium or pond -- all by circulating the water and adding dissolved oxygen. Features Weather Proof Design Durable & Compact Quiet & Energy Efficient What's in the box PA Series Air Pump 15 ft. Airline tubing 2" weighted air stones Replacement diaphragm set Check valves Product Manual