Just got this used off a gentleman for a great deal. He has had it for a year and bought it new, but he said the overflow sensor works sometimes and sometimes doesn't. Now I haven't tested it but I just want to get ahead of the game. If it doesn't work can I just buy a new sensor to put in the overflow cup? Going to include a pic of the part I am talking about and my new mombo jombo skimmer! Still have to clean and get it rdy for my tank but should have it up before Christmas.
