T5 lighting which has taken a backseat lately with the storm of LEDs is still a very good choice for lighting your aquarium. One thing we love about T5 lighting is besides being efficient, they can be dimmed and look absolutely amazing if done right. While most T5 lighting systems are not dimmable, a new controller on the market would very much like to change all that. The Vario Lux Control Dimmer is a German made T5 dimmer that allows you to program in several different modes such as day/night, sun/moon brightness, Cloud simulation, and Tropical dusk/dawn simulation. The Vario Lux Control can be purchased independently or with accompanying supported ballast units with 2x24W running you 285 euro or ($394).
Via [Vario Lux Control]