New product to be released soon for advanced reefers.
Not cheap but available for reefers who want quality equipment .
Trying a few of these on my tank will get some pics up soon.
What is ACLS?
Advanced Control Lighting System (ACLS) is a patented electronic dimmer which can reproduce a sunset-sunrise effect. This is the first dimming system for metal halide HQI lamps allowing a gradual 0-100% increase and decrease in the lighting level (other systems will not decrease the lighting level below 50%).
Key Features of the ACLS System
• ACLS mimics natural light which means that fish and corals grow and react in a similar way to when in their natural habitat.
• ACLS can reproduce the natural cycle of the sun, day/night and variable day-length according to the season. As the change from daylight to dusk and vice versa is very gradual the fish and invertebrates in the aquarium are not shocked or stressed by a sudden burst of light or by suddenly being plunged into darkness.
• During the sunrise-sunset phase the dimmer increases/decreases the lamp's power consumption offering energy savings in comparison with other lighting systems.
• The electronic dimmer keeps the lighting level extremely stable avoiding any problems with flickering lights. This also means that lamps coming to the end of their life can still produce a good lighting level and lamps can last 30-40% longer.
• After a power failure, most lights have to be left to cool down completely before they can be turned on again. With ACLS this cooling down time is reduced by 50%.
• The creation of natural lighting conditions in the aquarium, particularly the moon phases, could improve the success rate of breeding aquarium inhabitants, especially invertebrates, which are known to spawn in tune with the lunar cycle.
• The ACLS incorporates longitude and latitude settings which means that it is possible to automatically replicate the lighting levels of a particular place in the world e.g the Australian Continent or the Caribbean Sea.
• With two bulbs and at least two ACLS units you can recreate a sunrise-sunset effect with the sun rising in the east and setting in the west.
• With ACLS you can avoid the shock of a sudden increase in light when you replace older lamps with new ones. The "NEW" function reduces the power of the new bulb and increases it gradually over a period of days (exact number of days chosen and set by the user) until the lamp reaches its maximum power.