So in order for me to just monitor salinity with my RKL I have to buy an SL2 and a salinity probe? Im just wondering because thats nearly $200 just to monitor salinity. Any other cheaper alternatives rather than refractometers?
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So in order for me to just monitor salinity with my RKL I have to buy an SL2 and a salinity probe? Im just wondering because thats nearly $200 just to monitor salinity. Any other cheaper alternatives rather than refractometers?