Sep 20, 2020 #1 BKLYN651 Active Member View Badges Joined Dec 28, 2019 Messages 169 Reaction score 171 Rating - 0% 0 0 0 How often should you recalibrate a refractometer?
Sep 20, 2020 #2 jda 10K Club member View Badges Excellence Award My Tank Thread Joined Jun 25, 2013 Messages 14,343 Reaction score 22,422 Location Boulder, CO Rating - 0% 0 0 0 I do mine every few months.
Sep 20, 2020 #3 OP OP BKLYN651 Active Member View Badges Joined Dec 28, 2019 Messages 169 Reaction score 171 Rating - 0% 0 0 0 Thanks, will pick up a bottle.
