Grainfather recipe? - beersmith or grainfather brewing calculator?

[gorobrew]

I'm trying to figure out whether to use beer smith or the grainfather brewing calculator for figuring out mash water (vol & temp) and sparge water (vol & temp). There is a bit of a discrepancy.

This is going to be metric, sorry...

For my recipe, which has a 6.05 kg grain bill for a 22Liter batch (60 min mash - 10 min mash out- and 90 min boil):

Brewsmith calculates, Mash water-22.7 L of water at 68C, and sparge water 19.51L at 75.6C


Where as the grainfather brewing calculator says: Mash water 19.5L (no temp given, but most grainfather recipes are 68C) and Sparge water 13.5L (again, no temp given, but usually 75).

Which calculation should I use?? Does one of the calculations look way off? any advice would be much appreciated!

 

[Pekkales]

You should use the Grainfather calculator for water. I used only beersmith for calculations at first for GF and the OG and the amount of beer was way off, after switching to GF calculator it's pretty much spot on.

 

[gorobrew]

Thanks, sort of relief, the recipe on beer smith definitely didn't seem right…

 

[gspot]

I use Beersmith to formulate my recipe, but I use the formula in the user manual to calculate water volumes. Using the Grainfather equipment profile with efficiency set at 80%works fine for recipe formulation.