Hi dgasmd. ACLS basically controls my lights. I love the fact that I come home one day and my tank is little darker on one side or both. It freaked me out at first, but I realized that the ACLS was similating cloudy days. My MH output was like 60%, it looks really cool. Here what the website says about ACLS:
What is the ACLS system?
(Advanced Control Lighting System )
ACLS is an electronic dimmer, patented by SFILIGOI, which can reproduce the sunset-sunrise effect by using HQI lamps. ACLS allows gradual lighting and darkening from 0 to 100% and vice versa throughout the day.
What are the benefits and advantages of ACLS system?
ACLS satisfies all the requirements that many experts in the aquarium field feel are necessary for optimal aquarium lighting. It can reproduce a natural lighting flow: in this way the fish and corals in the aquarium grow in an environment very similar to their natural habitat.
ACLS can reproduce the natural biologic cycle of the sun, day/night and the seasons inside the aquarium: so the passage from daylight to dusk is very gradual and consequently there is no shock for the animals and invertebrates.
During the sunrise-sunset phases the dimmer reduces the power the lamp absorbs and consequently allows high energy savings in comparison with common ferromagnetic reactors with a 92% rent.
The electronic dimmer keeps the light output extremely stable to avoid flickering problems even when using worn out bulbs (250 Hz using squared wave). You have the possibility to use older bulbs with fairly good light output (the bulb duration increases to 30-40%). Further, after the tension falls, ACLS allows turning on of the lamp reducing the time by 50% in comparison with common ferromagnetic reactor.
Experts in the aquarium field agree that the creation of natural conditions of the sun and moon light, and in particular that of the moon phases, could help the reproduction of aquarium inhabitants, especially invertebrates.
Features of the ACLS:
* Control the duration of the sunrise-sunset effect
* Control the duration of the maximum light output (“middayâ€Â)
* Moonlight control
* Latitude
* Longitude
* Cloudy days
* Reduction of light output
* Reduction of lamp power (for new bulbs and break in)
* Standard timer for HQI lamps (output relay)
* Timer for actinic tubes (output relay)
* Timer for moonlights (using a suitable bulb)
* Electronic starter reduces the weight of the lamp by 4/8 kg.
* Energy savings
* Thanks to the "AUTO" option ACLS can automatically increase lighting output as we approach the summer season and reduce output when approaching the winter season.
* With the use of at least 2 Hqi Bulbs one can obtain a special effect in your aquarium. You can have the SUNRISE effect on the EAST and the SUNSET effect on the WEST (total photoperiod).
* With ACLS you can adjust the bulb output (and reduce shock to animals) when new lamps are installed. The "NEW" function reduces power of the bulb and will increase it gradually day by day till maximum power is achieved.
James