The reflector is a metalic piece with plastic clips that clip to the bulb.
When setting up a CWD tank remember they love to climp so put plenty of secure branches for them to climb. Also plastic plants to recreate their forest like habitat.
Waterfalls are ok but are relativly small compared to your viv choice. I would suggest designing your own and put a large area of water. These lovely creatures are not called waterdragons for no reason.