Go to this thread:
http://www.aussiehomebrewer.com/forum/inde...9655&st=380
and find IanH's spreadsheet and download it. It has Dr Smurto's recipe already loaded into it. Just something else if you are having dramas with Beer Smith 2
I just take a sample from the fermentor tap. After testing throw out the sample, it would not be a good idea to return back to the fermentor as you may introduce nasties