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- May 15, 2022
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The last few batches I have brewed, am having an issue with the SG dropping while it's in fermentation. I brewed a batch this weekend and the SG is 1.043 and when I got ready to add my yeast it was 1.040. It is now about 48 hours later, and the Tilt hydrometer is telling me that the SG in 1.017. I don't know if its correct as I don't want to open the container until I am ready to keg it. I expect it to drop, as it always does when I brew a batch, but this seems excessive. I have kept a spreadsheet of most of the beer that I have brewed, and they have lower SG readings at the end. I am needing to know if this is normal or am I doing something that is causing the large drop in SG readings from the time I start the fermentation? here is an example of an Irish Red Ale that I did a few years ago, SG after brewing is 1.042, SG reading after 1st fermentation is 1.020 and the final SG reading is 1.015 at the time of bottling. The recipe stated the OG is 1.042. It is possible, that I don't have a good understanding of these readings so any input would help to try and get a grasp of the situation to see if I need to change something or its just my lack of understanding.