36" MATRIXX II T5 Fixture

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Giesemann has been known for making high-quality light fixtures that use the highest quality parts available, with a durable powder coat finish. Most people will actually call their light fixtures a piece of furniture with how they look. We have run multiple Giesemann lights for years and have been very happy with them. Between Giesemann fixtures and the many other light fixtures out there, just simply the quality of parts and thickness of material make the Giesemann light fixtures our first choice for almost any tank where the light will be mounted externally and be visible.


Fixture color is powder coated Black

  • Stylish Corrosion Resistant Anodized Aluminum Fixture
  • Tough High Gloss Twin Layer Powder Coat Finish
  • Independent Reflector for Each T5 Tube
  • Three Light Circuits Can be Switched Independently
  • Non-flickering lamp start
  • Full Electronic German Ballast with Non-Flickering Lamp Start
  • Optimized Ventilation - Passive and Active Cooling


T5 Lighting has been a proven method of lighting a reef tank that works. For a simple light fixture that is easy to install with either the mounting legs or hanging kit the Matrixx II T5 fixture is an amazing well-built light.

Depending on the number of lamps in the units, the power cords will be able to control different groups of lamps independently.  That allows you to set multiple timers or a controller to "ramp" the light up in the morning and down at night. The Matrixx II gives off a beautiful even light with 99.8% reflective reflectors that keep hot spots and shadows from forming and blending all the lamps into one cohesive color illumination.

With active and passive cooling technologies keeping your T5 lamps at the proper temperature for maximum par output and bulb life is taken care of by the Matrixx II fixtures. With a glass panel that seals off the top of the fixture acting as a giant heatsink, while keeping a beautiful aesthetic appeal. The Matrixx II units have a robust heavy duty extruded and formed aluminum alloy for the outer with hand assembly putting them all together. All parts are pre-painted before assembly to keep corrosion from forming and protect your investment.

Giesemann uses high-quality ballasts as they do understand for a slight bit more in ballast cost, the light output is much greater than the standard ballasts the industry uses.


Standard Non-Dimmable Matrix II T5 Lighting Fixture
25.6in 4 x 24 W 24in 22in 25.6 x 10.25in 98 Watt 
37.4in 4 x 39 W 24in 22in 37.4 x 10.25in 159 Watt
37.4in 6 x 39 W 24in 22in 37.4 x 17.25in 238 Watt
49.25in 4 x 54 W 24in 22in

49.2 x 10.25in

221 Watt 
49.25in 6 x 54 W 24in 22in 49.2 x 17.25in
329 Watt
49.25in 8 x 54 W 24in 22in 49.2 x 17.25in
442 Watt
61" 8 x 80 W 24in 22in .61 x 17.25in


6 and 8 lamp models use the Giesemann 435mm hanging kit

 Owners Manual

More Information
Lighting Type Fluorescent
Fluorescent Bulb Wattage 39 watt
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Product Questions

How can you use the tank mounts to mount the 36" to a Red Sea Reefer 250 if it is 37.4" wide and the tank is only 36"?
Question by: Josh Cutler on May 18, 2016, 8:46 PM
Great question! Unfortunately the tank mounts will not work for this application.
Answer by: Carter on May 24, 2016, 11:37 AM