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tank volume is based on cubic inches... if the tank is 4ft x 1ft x 1ft.... that is 48 x 12 x12 = 6911 cuin. divide that by 231 cuin/gal and you get approx 29.9 gallons this does not allow for the thickness of the glass or the fact that the tank will not be filled up to the very brim.

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17y ago

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