It should be the same size scooper for all of them. For what I consider a regular pot of coffee......not strong, not weak.......I put 5 scoopes of coffee for a full pot. (12 cups) So that's about 2 1/2 cups of water per scoop of coffee.

You want 6 cups.....put 2 1/2 scoops of coffee, fill to 6 cups of water.