Most kits whether grain or extract call to boil the wort anywhere from 45-120 minutes. The Irish moss or whirlfloc tablet is added during the last 15 minutes of that boil time.
Ok. I know this is yahoo answers but is this accurate?
And I'm sparging with an amount of water larger than the batch size am I boiling down to the desired volume or do I use less and then use top off water like I have with extract batches?