So if I did it right....
24 inches x 18 inches x 48 inches = 20,736 cubic inches
20,736 divided by 231 (cubic inches per gallon) = 89.766 gallons
So those dimensions are for a 90 gallon tank?
I bought a tank from someone that now I want to sell. He said it was a 70 gallon tank, but I thought someone else told me it was a 90 gallon. I want to make sure before I try to sell it.