Originally Posted by JVD_X
Not if you use extract.
Alright, I called 5 star to ask some questions. It is only necessary to use 5.2 in the mash, if you want to use it in the sparge he said have at it, it sells more product. The directions were written by chemists with extensive brewing experience and their opinion is mash only.
As for extract, he said 5.2 was designed primarily to work with grains in the mash. But he said if you want to throw some in there that's fine. He said he would have to talk to a chemist to get opinions on any benefits. His main point was you can't hurt your beer by adding it wherever you want.