great site with lots of info
http://clawedfrogs.tripod.com/id19.html

IMHO, a 2 gallon tank is rather small for even a baby. Those stupid cups they sell them in deceive customers into thinking they can house animals in cruel situations. Don't get the frog if you aren't willing to get the proper supplies and housing for it right away. Would you get a dog and have it live in a large kennel for four months and call it a "temporary" situation while you figured out something better?