This particular suncolor does not have the dimming of the moonlights but it can be added and they have the capability. As with our planet II the leds are dimmable and you can connect a small interface that installs inside the fixture and then connects to our Biotopus II controller and then it will do the lunar cycle. Keep in mind that the suncolor evo is a hand made light made specifically for each customer so a customer can order what he/she chooses. We have even done evo's in wood to match a customers cabinet, made "slave" units to daisychain off of a evo with a controller, many different finishes, different wattage, etc.