Hey guys! I've been homebrewing for about five years but recently underwent some changes that put a two year pause in my brewing. Now I'm getting back into it. I've done two brews so far. Both have come out tasting well but I'm having a serious issue that I've never had before. My ABV has come out at half as high as it was supposed to both times. My Belgian wit was supposed to be about 6% ABV but came out just over 3% ABV. My Irish Stout was supposed to be about 7.5% ABV but came out at 4% ABV. Both were all-grain batches. 5 gallons per batch. Both batches sat a little longer in secondary fermentation by roughly 5 days. I have no idea what may be causing this problem. Any help or info would be appreciated!