I'm trying to get a handle on this. Beer Smith says i should mash out with 7.70 qt of water at 198.5 and let it rest for 10 min. Then sparge with 4.15 gal of 168 water. does this mean 168 or the 198.5 that was used to bring the temp up from 154 to 168. i hope this makes sense. to me it would seem that i would now have to have 168 water ready for the sparge and that i now either have to let the 198.5 cool to 168 or heat up more water to 168 .Les