36" Bluetooth Dimmable 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

  • Fully Controllable with Built-in Bluetooth*
  • 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.

Using DIMTEC technology with the Matrixx II T5 fixtures now gives you full control of your T5 Lamps with their easy to use app or desktop software through Bluetooth. Controlling T5 lamps is just like other LED units but your T5 lamps will adjust their brightness with the program you upload to it. The dimmable Matrixx II lights are controllable through the free app available for any Android based device.


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.


Dimmable Matrixx II channels of control:

4 Bulb - 2 Channels

6 Bulb - 3 Channels

8 Bulb - 4 Channels

Two total power cords. One cord powers all the lamps. The other powers the cooling fans.


DIMTEC Controllable T5 Lighting Fixtures
GM-MTX614 37.4in 4 x 39 W 24in 22in 37.4 x 10.25in 159 Watt
GM-MTX616 37.4in 6 x 39 W 24in 22in 37.4 x 17.25in 238 Watt
GM-MTX714 49.2in 4 x 54 W 24in 22in 49.2 x 10.25in 221 Watt 
GM-MTX816 49.2in 6 x 54 W 24in 22in 49.2 x 17.25in 329 Watt
GM-MTX718 49.2in 8 x 54 W 24in 22in 49.2 x 17.25in 442 Watt 


4 lamp models use the Giesemann 260mm hanging kit

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

Android device required for dimmable control.


 Owners Manual

More Information
Lighting Type Fluorescent
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Product Questions

Hello, can this 36" fixture be mounted to a 40 gallon breeder using the available mounting legs?
Question by: Bobby Cherian on Jan 7, 2017, 2:49 AM
Great question! The Matrixx II Mounting Legs will work perfectly for this light on your 40gal breeder tank! :-)

Answer by: Randy on Jan 10, 2017, 2:01 PM
6x39W T5 Bluetooth Dimmable
hello how do I control this light, is there a iPhone app?

Thank you
Question by: john on Apr 6, 2016, 6:09 PM
Great question!
After putting the software CD onto your computer you can connect via bluetooth to the light fixture. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 12, 2016, 4:41 PM