I finally decided to take everyone's advice and ordered a refractometer, which just arrived. Yikes! I had a swing-arm hydrometer and have been keeping the sg
at 1.023. I just calibrated the refractometer with distilled water (didn't have to adjust it actually) and tested my tank water... it says I've got it at 1.030, or 40 ppt
! I obviously have some adjusting to do. How fast or slowly should I bring down the salinity?
And by the way, are all refractometers created equal? And all to be trusted over hydrometers?
This is the one I got (it was only $34.99 at the time):