I make that to be about 1735 gallons

I generally guess about 10 pounds per gallon to account for water,
tank, substrate, whatever else is in there.
some reading:


http://saltaquarium.about.com/od/diytanksrefugiums/

http://www.duboisi.com/diy/diyglossary.htm

Thanks for the links...a lot of useful info found there. How did you come
to the amount of 1735 gallons? Is there a formula you used or are you just
familiar with tanks of this size?

Sean