Quote:
Originally Posted by Reefer Rob
Do you warm your refractometer to 25C?
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It sits in my stand which contains my HQI ballast and has an ambient temperature around 25C (which, incidentally, makes it a really bad place to store tests kits - hence my Elos kits are kept in the basement which remains relatively cool).
I also do not allow the drops to sit on the refractometer for any length of time before I take my reading - drops on, flip the lid and take the reading for both calibration and when taking tank readings.