How soon during fermentation phase should one take a hydrometer reading?
Some people take a few hydrometer readings throughout fermentation. Personally, as long as you have signs of fermentations within a day or two I wouldn’t even bother taking a reading until you are ready to bottle it. Take a reading on bottling day to make sure your gravity gives you a green light to bottle and you should be good to go. A week in the primary should get you pretty close to F.G. There are some benefits to letting it ferment longer though. I typically leave them three weeks in the primary and then bottle. I don’t take a gravity reading until bottling day on week 3.
