Hi all, Second attempt at AG brewing yesterday (trying to ignore the first where I dropped my thermometer in the mash, then clogged the kettle's filter with hops and had to pour it out via a sieve). Was attempting a recipe from the Jon Finch book which can be seen at https://www.themaltmiller.co.uk/product/house-pale-jon-finch/ Grain bill was Crisp Pale Ale Malt (3500 grams) Crisp Crystal Malt (500 grams) and I was aiming for 19l in the fermenter with an OG of 1.049. I ended up with 18l (not sure where I'm losing that 1 litre yet) with an OG of 1.044. I'm guessing that it was my mash which didn't extract as much sugar as the recipe would expect. According to my BeerSmith calculations I ended up with an mash efficiency of 67% which from what I've read on here/other forums is a little on the low side. I batch sparged. The first runoff (11 litres) had a gravity reading of 1.056. I then added 11.8l of water back to the mash, gave it a stir, left it a little while then the runoff from that batch had a gravity reading of 1.020. Would you expect the second runoff to have such a small reading compared to the first? If not, I guess that's what I need to look to improve somehow next time. If so, what else should I be trying/monitoring/measuring to attempt to improve on this next time? Any advice appreciated. Thanks.