The graph was made in tap water and the temperature change is just due to temperature fluctuation in my house over a hot summer day. I ferment in the basment dont worry. But I was supprise to see a change of gravity in water.
Do you experience a difference between your hydrometer and the Raprt...
I calibrated my RAPT pill twice with the simple methode and still it's reading 0.007 lower than my hydrometer and my refractometer in wort. My hydrometer is calibrated at 68F and I do compensate for the temperature of the wort. My refractometer gives me a pretty close reading (within 0.002) of...