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reefsaver

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I was wondering if there was any Salinity testing equipment that actively reads Salinity in real-time, I use the Hanna Salinity Checker which I really enjoy but sometimes I get the feeling that it's not as accurate as a Refractometer.
 
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Big E

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The Pinpoint Salinity monitor can be used full time. I had one that lasted at least 15 years for me. I didn't use it full time in line but would use it as a check and balance for my refractometer.

I liked that it was portable and not rigidly set into one system. This allowed me to check mixed saltwater as well as multiple tanks.

 

gbroadbridge

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I was wondering if there was any Salinity testing equipment that actively reads Salinity in real-time, I use the Hanna Salinity Checker which I really enjoy but sometimes I get the feeling that it's not as accurate as a Refractometer.
Most aquarium controllers have salinity monitoring.

I use a GHL Profilux, another is the Neptune Apex, and Reeffactory have one too.
 

Randy Holmes-Farley

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Real time salinity monitors are conductivity meters. Same thing as a TDS meter, but designed for the right range for full strength seawater.

Whether any particular hobby brand implements it optimally or not, conductivity meters are the go to way for chemical oceanographers to measure salinity. It can be fast, highly accurate and highly precise.

That said, despite having some very good conductivity meters, I never wanted to leave the probe in the water 24/7 due to potential issues like fouling with organisms/precipitates/bubbles.
 
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