Hi all had a brew day the other week and as things go when you have a audience. The mash was to high 69 and dropped to 68.5. I new it was a little to high. The beer started at 1.065 I dry hopped on day 10 and it was 1.020. Checked it to day day 13 and it is 1.028? Can dry hopping affect gravity? Was going to bottle some but kegs will have to do. Can I add dme to bring alcohol up as it is a big beer. It was a double batch with two different packs of us05 yeast both have read the same gravity readings. All thoughts and answers appreciated.