So I have my eye on a 3BBL system from Portland Kettle Works. I am in the process of opening up a nano brewery and am building a temp. controlled room wich will house the fermentors. I am starting out small and want to get some bio-diesel tanks to use, only problem is that I do not know which ones to get. I can only find them in 85gal. and 60gal. So do I brew a 120gal. batch and split into 2-60gal. tanks but only get about 110gal. or do I just get the 110 gal tanks to begin with or is there other bio tanks out there to accomodate? Thanks