For APA I (sort of) use the Pale Ale profile. It calls for 300ppm sulfate, but for APA I really like ~ 225ppm sulfate. So I match the pale ale profile in every respect except that, as said, I back the sulfate to ~ 225, but I use the epsom , canning salt, and calcium chloride to the letter. Usually (depending on grist) calls for a small amount of lactic acid.