ProLake Electric Aeration Systems offer rugged durability with sleek, user friendly design for ponds and lakes. Featuring a no fade or chip, sound-deadening cabinet that surrounds a power-packed compressor, pressure gauge and multi-feature timer. Each unit comes complete with a 4 port manifold making it easy to expand your system economically. ProLake timers feature seven-day, 24-hour control, power outage back up, manual override, permanent schedule retention and locking hasp. The result is a high-end, energy efficient aeration system that will keep your pond or lake clean and problem free for many years to come.