Description
【How does it Work】Automatic top off system with 2 optical sensors monitors and replenishes evaporated water each day. A great time and energy saver for saltwater tank fish keeper especially when you are not at home. 【Fail-Safe Design】build in two set of sensors, hygger auto top off keeps track of the water line of aquarium/sump tank. ATO monitoring sensor which keep a constant watch on the water level in your tank, and when it drops below a certain level and the water pump will be activated to a
