New refractometer - help

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AcroFan144

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Hello,

I am thinking of buying D-D H2Ocean seawater refractometer. So far I have been using a cheap, 20$ Amazon refractometer. However, it is constantly going out of calibration, within 30 seconds.

Does anyone have experience with DD refractometer? I would like to hear them!

Thank you
 
Corals.com
I dont but for a few dollars more recommend Hanna salinity digital tester or ice cap Digital version
 

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