What refractometer do you use? How do you calibrate your refractometer?
I am looking at the Vertex and BRS as the two I would like to purchase in the neat furture.
_________________ 90G mostly LPS and Soft reef (purchased setup 3-2012). 100 lbs LR, 3" sandbed, 4 x 54 T-5 lighting system, and anything else you want to know about tank just ask.
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