Water calculator

[Marcusp]

I've just got all my equipment ready for my first biab and plan to do full biab in a 70ltr pot.

Upto now I've only ever brewed kits and the only water treatment I've done is adding a campden tablet to rid the chlorine etc.

Now I'm doing ag I've had a play with the water calculator on here and am a little confused when it asks me for the total water volume and then the mash volume as with a full biab everything is done in one go.

Can someone please explain to me what I should be inputting into the calculator and also when treating the water with crs, gypsum etc do I put it all in during the mash or separate it between the mash and boil times.
Thanks

 

[jonnymorris]

Not used the calculator on here but check out Graham's Water Treatment Calculator (google it) and it'll answer your second question about when and how to add stuff.