F fishywoo Advanced Reefer Location Manhattan Rating - 100% 125 0 0 Apr 4, 2010 #1 Anyone know if their is a shelf life on the fluid used for calibrating refractometers?
nyfynest22 Advanced Reefer Manhattan Reefs Location LONG ISLAND , NY Rating - 100% 14 0 0 Apr 4, 2010 #2 just use ro water to calibrate it, put some ro water in the meter adjust it to 0. then you can clean it off and test your tank water.
just use ro water to calibrate it, put some ro water in the meter adjust it to 0. then you can clean it off and test your tank water.