Quote:
Originally Posted by Chaloupa
Refractometer....I was using only a hydrometer but when I found out HOW out of whack it was...I stopped!
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You should make sure your refractometer isn't the one out of wack Calibrating it with RO/DI can cause issues, use something like Pinpoit salinity fluid.
My glued back together 4 times Aquarium Systems hydrometer finally died so I use the refract now. I calibrate it every week though.