please tell me litres/gallons

[dolly_daydream]

hey everyone i got a new tank today for my bedroom yah
i got it given to me off a friend with heater and pump
the size is
31 inches long
21 inches tall.
and 12 inches wide
so the question is how many litres/gallons
thanks

 

[CathyG]

I make that 128 litres (or 28 gallons) before displacement.

 

[The-Wolf]

yup I make it 128.02 Liters or 33.80 US Gallons