i bought a tank from one of my friends that measuers 24x12x12, and i am first curious to approximatley how many gallons it is? does anyone have any suggestions about how i should set it up. i was thinking a expandable foam and cocobedding background, but any other suggestions are welcome. i am setting this up for my two auratus. i have them in a 10 gal and i would like to buy more and move them all into this new tank.