Just finished setting up IKEA smart lights as a cheaper/diy version of a sunrise/sunset aquarium light. Now the water dragons will no longer be startled by the lights turning on :) :
Aquaworld Aquarium - Do it Yourself (DIY) LED Aquarium Lighting System
Amazon.com: hygger Auto On Off LED Aquarium Light, Full Spectrum Fish Tank Light with LCD Monitor, 24/7 Lighting Cycle, 7 Colors, Adjustable Timer, IP68 Waterproof, 3 Modes for 12"-18" Freshwater Planted Tank :