Bingo. I'll start with B50 simply because it doubles my production. One 25 - 30 gallon batch of bioD becomes a 55 gallon barrel of B50. Two batches (definitely do-able in a weekend) makes two barrels - enough to keep me going for almost a month. My reactor is finished; gotta get the washer/dryer setup assembled. Hope to have all this completed this weekend. Be kinda cool to run the first batch thru on Memorial Day.