Apex Salinity probe versus refractometer?

[jonmos75]

@rygh do you have float switched in your setup in the sump as I have heard that cheep yellow wired eBay/Amazon float switches and other float switches when they get old they leak voltage into the tank and could cause issues with the conductivity probe....just a thought...

 

[rygh]

@rygh do you have float switched in your setup in the sump as I have heard that cheep yellow wired eBay/Amazon float switches and other float switches when they get old they leak voltage into the tank and could cause issues with the conductivity probe....just a thought...

I tested it by putting tank water in a small vial. No difference.
So not stray voltage.

 

[jonmos75]

Have you sent an request into Neptune Support about this?
https://www.neptunesystems.com/support/contact-support/

Not the community forum as I saw you posted this there also.....