TUNZE Osmolator Universal 3155 Marine Aquarium Auto Top - Off System Water level. Used on aquarium for about 1 year. Feel free to ask any question all sales final!The item "TUNZE Osmolator Universal 3155 Marine Aquarium Auto Top Off System Water level" is in sale since Sunday, October 25, 2020. This item is in the category "Pet Supplies\Fish & Aquariums\Meters & Controllers". The seller is "piston8871" and is located in San Pedro, California. This item can be shipped to United States.