Edited by board administrator September 6, 2017, 3:17 am
I think this answers your (our) question.
Here is the one Howie brought me, it has a red plastic strip (which I have lost) to make
the gauge easier to read from a distance but, since it floats on top may also
aid in reducing evaporation. Perhaps floating something on top of the water of your
gauge would help?
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