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How would you go about calibrate them?
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How would you go about calibrate them?
or the 70's and 80'show did anyone get through the 90s
or the 70's and 80's
They invented high quality floating glass hydrometers in the 1600's, if not earlier. They were probably more accurate than hobby refractometers. lol
Its also good for my seahorse tank. I have never used a refractometer and I've been doing saltwater for 20 years. Like Brandon I get mine calibrated with a lfs every so often and its been fine.hydrometers are all ive used for 16 yrs and wont ever need a refract, my swingarms are taken care of as mentioned above. every few years ill calibrate them to the LFS refract and its 1 point off on the high side, but very consistent and my reefs don't care. so, ill never buy a refractometer what worked in 2001 still good for my tiny reefs.
Yes that is true. And actually I am not so much being negative about refractometers as I am merely saying that a hydrometer has worked well for me as long as I have been in saltwater. I think each person should use the instrument that they are comfortable with.Let the record stand that when I got my notification response I was not expecting another person to condone nonrefraction heh.
My swingarm is so old the .023 is rubbed off and I just estimate somewhere in the middle of the rub
In that post you specified Mortins, would a salt water mix be suitable?I explained that a few posts earlier. Use the standard fluid I posted or other fluid you know the salinity of, and then:
" If the hydrometer reads higher or lower than 1.0264, then the aquarist can just imagine the scale on the hydrometer to be shifted up or down, and shift all other readings taken with it by the same amount, just as for a standard floating hydrometer."