I'm in the hotel business. Unfortunatly we have this problem alot. Not usually from fish tanks, but people who think sprinkler heads are for hanging cloths, doing gymnastics, you name it. You need to get all the furniture up and probably clean the part touching the carpet due to the salt water. Also, pull up the carpet and pad. Throw away the pad and clean the carpet thoroughly with fresh water through a carpet cleaner. Use fans for circulation and get a dehumidifyer. We use high end industrial strenght ones and it takes a week to dry out the room, especially if it got to any drywall. Your biggest risk is mold. You want to spend the money now and get it dried properly otherwise, you'll be spending a lot more in the future stripping the room down to the studs, killing off the mold and completely rebuilding.
