I’m struggling (again) to make sense of my Hydrometer. I am brewing an American IPA from a kit. I started on Sunday and before pitching the yeast I took a reading (photo 1), I had 24 hours crazy fermentation, then nothing. Barely a bubble. Today (Thursday - Day 4) I took anther reading (photo 2). Something has definitely happened and it floats a lot lower! I am meant to be adding hops on day 7 and tasting it on day 10. Am I on track with this reading?
Also, sorry for the really basic question, but why does my potential alcohol scale on my hydrometer appear to go in reverse I.e it started at 6% and is now nearer 0% after fermentation?