[RobHoman]

I think Walt''s summary is pretty accurate and wisely put. Should you elect to change your tankage you may actually create a set of problems that will double the chances that "Murphy''s Law" will get you. The soundness of the tanks is of greater importance than anything else. Consider this...if you double or triple the number of tanks, you will effectively create multiple possible points of failure. Also you will spend a great deal of money fixing a problem that isn''t.