Tart Cherry Juice

[Chrisctx]

I am looking to brew a wheat beer and add tart cherry juice instead of using extract flavoring and was wondering how much I should use.This is 100% pure cherry juice no preservatives or additives.
Looking to use
6.6lbs wheat malt extract
2oz de-husked carafaIII malt
5oz cara red malt
1oz bramling cross hops 60 min
safale s-04


Was planning on using 2- 33oz bottles in the secondary.
Comments and suggestions appreciated

 

[Calypso]

I just brewed a Cherry Witbier from Zymurgy (http://www.homebrewersassociation.org/homebrew-recipe/beer-recipe-of-the-week-so-very-cherry-white/) and for a 5 gallon batch, they called for 1 pint of cherry juice concentrate, which my research seems to indicate reconstitutes to approximately 1 gallon of juice (which matches what they say for the concentrate that JuiceMan posted).