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Is it time for a new salinity probe??

PostPosted: Sun Sep 01, 2019 6:43 am
by 89delta
Over the past week i've had to recalibrate my probe maybe 2-4 times a day. At first I mad a cup of 35ppt saltwater and kept it in my sump to temperature acclimate for the compensation. But after each time I calibrate the reading goes up and up and up, or it goes down and down. I finally got fed up and used the memory location to change the values to what my hygrometer says. But yet its still either going up in value or down in value. The probe gets cleaned weekly with a tooth brush. So right now i'm wondering if I need a new probe. Thoughts. Oh and the power supply is isolated from the RA.