30 days is only a min ... many suggest 60 to 90 if you talk to actual breeders. Its not something that you will be looking for to show up right away. You need to watch over the 30 days there eating, climbing, bathing and pooping.. there weight gain or weight loss. Many frogs in a new home may not start pooping regularly until 2 weeks in. A large cricket keeper or small tank is safer than throwing the frog in with others and will reduce stress. let the frog calm down and get used to the surroundings and sounds before also giving it a new neighbour. There is nothing a few days is going to tell you... that you wont see at the store. And you are risking both the new frog and your others health if you aren't waiting...