ATI 36 Inch 4x39W Powermodule T5HO High-Output Fixture

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This item has been discontinued.


*Please note: ATI lighting fixtures do not include bulbs.

ATI 36" 4x39W Powermodule T5 High-Output Fixture complete with individual parabolic reflectors for each bulb made from silver-coated 98% reflective German-made aluminum, active cooling system w/ 2 fans, built-in electronic ballasts, acrylic shield, two 10 ft power-cords and a sleek, adjustable "Grip-Lock" style hanging kit.

Common Sizing Guideline: soft coral tanks up to 80 gallons, mixed reef tanks up to 60 gallons and SPS dominated tanks up to 50 gallons. Recommended Tank Depth: up to 30" with carefully planned placement of corals. Power Consumption: approximately 156 Watts. Warranty: 1-Year Manufacturer`s Limited Warranty.

Dimensions: 34.5" x 9.5" x 2.3" (L x W x H)


  1. Unbeatable Performance: Superior design and high-end components produce 50% more light than most other equally sized T5 fixtures. Active cooling system allows bulbs to run at a more optimal temperature improving both bulb output and bulb life.
  2. Energy Efficient: Produces up to 50% more light than most other equally sized T5 fixtures without using more energy.
  3. Stylish European Design: Sleek, heavy-duty silver colored body is durable and rust-proof and only 2.3" high. All components including the T5 ballasts are enclosed inside the fixture housing. The only items external to the fixture are a small junction box, 2 power-cords and an AC-DC Adapter to power the fans.
  4. Independent Lamp Control: Fixture is wired with 2 bulbs on one power-cord and the other bulbs on the other allowing for independent control and dawn-dusk simulation.
  5. Quiet, Cool Operation: Runs cool and produces virtually no noise.

Manufacturer Info

ATI is a German based company that specializes in high quality T5 lighting products as well as a line of skimmers and aquarium filter media. Their T5 bulbs and fixtures have become one of the more popular brands of reef enthusiasts.

terrarium guy from LOS ANGELES, CA UNITED STAT


Experience Level: Expert

Could be better

The functionality with dimmable T5 tubes is what I was attracted to. The fixture permits setting eight different fix points for each of the 4 and 2 bulbs independently, so that daily intensity curves can be modeled quite accurately. This works very well, and is a major step forward in providing natural habitats. Programming the rest of the features is rather simple with a five button interface. The built-in fans are reasonably quiet. I have not had in on during peak summer times in southern California, so will see how it works then. HOWEVER: The the control panel of the unit was poorly mounted in the case, so that the the menu-options were scrolling by on their own. Not the precision crafting that one would expect from a German product. Unfortunately, I needed the product now so did not return it. After some fiddling, I got it sort of to work. [minus 1 star] After a power outage, the timer resets to its default time, so the day-night cycle is no longer in line with actual time. This in contrast to the Digital Aquatics HerpKeeper system, which I use for the rest of my controls. I will now have to put the ATI fixture on a UPS. [minus 1 star]

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