This seemed like a terrific idea and I bought it for my daughter. We sent the money in for two frogs. When they arrived, one was well-past dead and the other died that night. We got one replaced which is now belly up in the tank.My daughter was so excited about this project. We had raised tadpoles two years ago without any problems. She is going to be so upset when she finds out that the third tadpole didn't live.The tank itself is made of cheap plastic and it gets so hot inside the tank, the plastic fogs up. Needless to say, it's going in the trash. I'll get another glass aquarium and raise tadpoles as I have done in the past, without the loss of froggie life.