Keep lighting to a minimum. Lights are unnecessary for salamanders. Most aren't active until night. You need a rock in the center for it to climb on. Also they like a dish to swim in.
Salamanders are hard to maintain and hard to find.
It is easier to start with waterdogs and let them change into salamanders. Habitat What you need to set up a habitat is a glass aquarium with a dark green cloth on the back wall, a land and water area, climbing items, a basking area, and plants. Tree frogs need places to hide in their habitat such as trees. Plants that are good to use are monstera and philodendron. It might be a good idea to have some extra plants to trade out when cleaning the aquarium.