Not new to brewing...just the software!

[AndrewC]

Hey there folks!  I am not a newbie to brewing, but have only done a few dozen beers.  Of course I tinker on my equipment almost every time, and have a three-tier sculpture and no heat on the mash tun hooked to 420,000 BTU!. 
I just purchased the BeerSmith software and am having trouble with the sparge volume....it's NEGATIVE!  What am I doing wrong!?!
:-[

 

[ihikeut]

Check or set up your equipment profile. Especially top up water for kettle.