just checking to see if i had my top-off dosage calibrated right. so far the litermeterIII is work'n sweet! at the beginning, the tank's salinity ppm measured at 34ppm, last sunday. today, i measured and accidently grabbed my old meter, and the reading was way low at 31ppm:shock: but the new meter i had read at 34ppm :skeezy: sooner or later i'm gonna need something better and more reliable than these plastic meters. any recommendations? hanna probe or refractometer?
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