parrotchute
DUSTOFF MEDEVAC
So, I'm prepping for the water change (after 6 weeks away); my girlfriend had done 2 water changes while I was gone, but was using the refractometer with good salinity readings...
the last time she did it, she thought the salinity was low.
When I checked it today, it was 1.020, down from .026 from when I left. Could the salinity have dropped this much with normal water changes, or is it likely the refractometer is out of calibration? I've never calibrated it after the first time, maybe I should do it again? Is it easy for them to go out of calibration? I figured it was purely mechanical and would stay normal.
Temps have been constant..
Alex
the last time she did it, she thought the salinity was low.
When I checked it today, it was 1.020, down from .026 from when I left. Could the salinity have dropped this much with normal water changes, or is it likely the refractometer is out of calibration? I've never calibrated it after the first time, maybe I should do it again? Is it easy for them to go out of calibration? I figured it was purely mechanical and would stay normal.
Temps have been constant..
Alex