So, for the last few batches of beer, I have been overshooting my FG. I used BS3 to formulate my recipes and have brewed these multiple times. I also use a tilt hydrometer and, because I'm pretty anal, I verify with a hydrometer that reads correctly. Calibrated in RO water. I recirculate using a HERMS. I have not changed my processes for these recipes. I use iodophor to sanitize everything. Example 1) FG 1.009 but I actually hit 1.002--- Ex. 2) 1.011 but hit 1.004 Both beers are 7 points over what they should be and what they have consistently been.
Suffice it to say, I am pretty clueless as to what is causing this.
Has anyone had this happen to them and what are some possible causes?