Considering an 80 gallon ...

[Roan Art]

Thank you Roan. No, the US system is not called the Imperial system, thats what they use in Great Britain/UK/whatever. The US system is, well, just the US system. Also, there is no such thing as a "metric gallon". There are liters, but 4 liters is not a metric gallon.... not in any official capacity, anyway. I wish we could start using the metric system like the rest of the world, it would make life a lot easier IMO.

Actually, Britian is metric, like most of the rest of the world now. USA needs to play catch up some day.

More:

http://en.wikipedia.org/wiki/Imperial_unit
http://en.wikipedia.org/wiki/U.S._customary_unit
http://en.wikipedia.org/wiki/English_unit

Roan, sad victim of the metric system