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Keep it away from walls, doors or windows. The unit should not be placed too close to plants or other objects. Keep a distance of at least 20 inches (50cm). Place the Ionic Silver Stick in the water base of the unit. Fill the unit with a clean container. Pour fresh, cold tap water into the filling opening of the upper part. When the unit is filled, do not push down the float tip since this causes the unit to overflow. Stop filling the unit as soon as the water level indicator ring of the float a