Working Out the Amount of Strike Water Needed to do a BIAB.

[Darren Andrews (Daza)]

If you were looking at doing a BIAB and wanted 23L in the Fermenter, how do you account for water loss? I see some say work backwards to work it out, but every system does vary some what and it is a trial an error way to do it, But what is the general water loss to grain is it 1 litre to every 1kg of grain? I have been Googling etc... but you guys know your stuff, and value your opinions. Cheers.

Daza.

[Darren Andrews (Daza)]

Yep way more simpler for me anyway. But cheers for that.

[Steve Dorrington]

23L into yr fermenter
+7.5 grain absorbtion
+4.5 boil off
=35L :)
Start with yr 34L. Then you have some headroom if you want to tweak the mash temp up or down a little. Make a dip stick marked in 1L increments then you can measure the preboil volume accurately.

[Darren Andrews (Daza)]

I made a dipstick from a metal 600mm ruler and marked it at 20L and at 30L also in between and what the measurement was on stick to how many litres that meant.

[Darren Andrews (Daza)]

a pre-boil of 27.5 to 28L sounds about right?