Unless your tests are reading 0 ppm Ammonia 0ppm Nitrite and 0-20ppm Nitrate your tank is not cycled. It is impossible to know if your tank is cycled without testing the water but I'd say your tank is not cycled after a week. It usually takes over a month
They're not that bad ^_^ I love mine. If you choose one with a nice temperament, then they can be great pets to have! Eat once a week, clean their tank once every three months, and touching is optional!