I started a thread awhile ago and should have asked there but forgot. Here is the sparge calculator i am using http://www.tastybrew.com/calculators/sparge.html I don't understand the catagory called "Wort lost to dead space" and the "desired kettle volume". I have a 7 gallon boiling kettle and lets just say my OG is 1.034 and i am using 9 gallons for a test run. Thanks guys. recpe volume is 5 gallons