I bought the one that came with a float switch wired into the unit. It came with a dripper or bubble counter I think it's called. It was about twenty bucks more than just the pump alone. It uses a float and a siphon. My float switch is hard wired in on the bottom of the pump housing. I would think you could cut the wires going into the unit ( one side only ) and splice in a float switch. Dr. Foster's sells the bubble counter. It's by the CO2 stuff. $22.00 though.
Mine is called the Aquamedic Niveaumat. I would contact them and see if you can get the parts from them. I would think they would be cheaper. Maybe you could return it for the Niveaumat.
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