Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Refractometer Question (http://www.tropicalfishkeeping.com/beginner-saltwater-aquariums/refractometer-question-103108/)

dandk2261999 06-01-2012 03:30 PM

Refractometer Question
 
When I look at my in-tank hydrometer it reads .022 but when I test it in my refractometer it shows .024. Is it common to have that difference between the two. The refractometer has been calibrated per the instructions and I check it weekly.

Reefing Madness 06-01-2012 05:52 PM

Quote:

Originally Posted by dandk2261999 (Post 1102932)
When I look at my in-tank hydrometer it reads .022 but when I test it in my refractometer it shows .024. Is it common to have that difference between the two. The refractometer has been calibrated per the instructions and I check it weekly.

:thumbsup:
Thats why we advise the use of a Refractometer. Hydrometers are not accurate.

dandk2261999 06-01-2012 05:59 PM

great thank you.

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