The HIBlow HP80 Linear Air Pump Air Compressor Pump is a freestanding metal pump designed specifically for aerating koi ponds. It features easy installation and operates on a corded power source, making it convenient and efficient for maintaining optimal water quality in your pond. This model, known for its reliability and durability, comes in a sleek black colour and requires no assembly for immediate use. Perfect for keeping your pond healthy and vibrant, the HIBlow HP80 Linear Air Pump is an essential addition to any backyard oasis. I have refurbished this air pump having bought a new pump. It has a new filter and diaphragms on both sides. It is now working perfectly. Selling as I don’t need one lying about. Postage or pickup near junction 6 of M25.