Mysterious penguin 170 leak.
After a couple of days of being away, the water had leaked out on the floor. The aquarium water level was just down to the bottom of the suction staw where it would stop pumping. The aquarium and penguin 170 were checked for leaks and none were found. The filter was not blocked, but the little slope where the tube goes into the unit, should the filter be clogged and the water has no where to go, would probably prevent this. The water was refilled and the filter is on and everything is fine. I don't know what could have happen. Has anyone had this happen or have an idea? TY in advance.