Yes I tried that one first. Then I went to the tank cleaner.
I should have asked the guy on the phone if the tank cleaner has more enzyme in it. Check MSDS, I thnk they are the same.
http://www.starbrite.com/productdetail.cfm?ID=1166&ProductCat=Marine&ProductSCat=Gas%20and%20Diesel%20Additives&ProductSSCat=Startron%20Tank%20Cleaner
Starbrite just recently introduced this product, They have licencing rights from a British company and the product was called Starron I believe. Anyway it has gotten rave reviews from Boatnicks, and if there is ever a diesel fuel problem, just talk to guys who run boats with diesels. Higest rate for condensation (especially metal tanks) and crappy fuel in general.