I was following this thread along and I think I know where the confusion started.
The dimensions of my 48 x 12 x 18, which I thought was a 40G?
Which is close enough (44 or 45 gallons).
two feet long by one feet wide by a foot and some tall? Yeah, that sounds like my 10....
Yours is 14g. However, Somethingfishy's is four
feet long by one feet wide by a foot and a half tall.
I know that this will sound weird but the difference in the tanks is twice the length and then half the hight added on. Roughly 15g twice = 30g plus 50% = 45g.
Now, you should be thoroughly confused.