Quote:
Originally Posted by FlyWright
Sounds like the higher density of the buildup is throwing off the density calibration for the sensor. Try recalibrating your system instead of cleaning. Maybe it'll improve its sensing.
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I don't have the instructions handy but I don't think there's a way to calibrate it. There are three or four sensors and when the level gets to a sensor it lights a light when the button is pushed.
Having just written that, it seems possible that placing a spacer between the sensor and the tank wall might reduce sensitivity and still allow it to work. A project for a rainy day.