Hi and welcome! I already replied to your post, and let me tell you something, NEVER mix different frog species, specially with this because of their skin secretions. Good luck with Trooper!
I agree with Mauricio...keep one species of frog per tank. Its better for the health of the animals. Also, check around the forum here and you'll notice half the fun of keeping frogs is doing cool tank builds. So that'll give you enough reason alone to build another tank.