Giesemann Razor T5 Retro Strip

  • SKU: GM-RZ

The Razor T5 strip is ideal for applications requiring the watertight illumination of aquariums and terrariums. Idea all-in-one fixture for supplemental T5 lighting applications.


Refined Retrofit T5 Lighting

The T5 Razor Light is the smallest and thinnest section that we could create while still holding all of the electronics and ballast within the body of the light.

The Razor T5 bar is ideal for applications requiring the watertight illumination of aquariums and terrariums. The extruded aluminum fixture is watertight and guarantees maximum safety and light output. 

Watertight lamp holders and PG adaptors offer hermetic protection for the entire inner electronics. Cooling of the built-in electronic high frequency ballasts is provided by precisely calculated surface structures in the aluminum section. 

The high-quality anodized finish of the section provides optimum light reflection and is resistant to aggressive saltwater, while the built-in electronic HF ballasts make for flicker-free operation with immediate startup.


Model (length x width x height)

RAZOR 2 x 24 Watt: 23.4" x 7.7" x 1.9"

RAZOR 2 x 39 Watt: 35" x 7.7" x 1.9"

RAZOR 2 x 54 Watt: 46.8" x 7.7" x 1.9"

RAZOR 2 x 80 Watt: 58.6" x 7.7" x 1.9"


T5 tubes also gain an advantage as they produce their optimum lumen output at higher temperatures compared to older technology T8 tubes which typically produce their highest output at 25°C.

A recent study by Giesemann showed that the optimum ambient operating temperature for T5 tubes was found to be at around 35°C, a much more realistic operating temperature for a reef tank luminaire and the temperature that the new passive cooling technology is designed to run without the use of active cooling fans.

Equally tubes that are cooled to temperatures below the optimum also suffer a lumen output that’s lower than expected. The Giesemann lighting unit also incorporates extremely efficient reflector technology meaning that more light is reflected into the aquarium rather than back at the tube. Light that’s reflected back at the tube can increase its working temperature resulting in reduced lumen output.


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