I just noticed that my zoas aqua auto top off has stopped pumping water up to my tank. The water level is currently well below. censor and the corals are not happy. The salinity is at 1.027 which isn’t to high but I will do a water change to bring it back down. I am not sure if the pump has stopped working or something went wrong with the sensor. Should I try and clean the pump and see if that helps. Let me know what you think is wrong and what I should do. Thanks