the good thing about carpet is that there is so much surface area, it evaporates quickly... if you had hardwood or tile, it would've ruined the drywall by puddling up...
i know someone.. LOL.. (i hope he doesn't read this, he'll kick my arsen...) he got mad at someone, and threw a 28g nano cube to the floor... poor seahorses and coral went flying everywhere... he quickly regret it, and picked it up... good thing he had a 180g next to it... nothing died... but the water dried the next day... no real damage other than sand and bristle worms in the carpet... crazy...