Entry level LED/Hybrid technology at a very favourable price point

Without sacrificing convenience, the GEMINI offers an optimal entry point into hybrid technology. By means of built-in Bluetooth light control, the 3 LED channels can be continuously dimmed and (nbsp) programmed, and additionally both T-5 channels, with a total of four T-5 lights, can be turned on or off at a desired time. The high quality aluminium casing provides optimal cooling for the lamp. Each group of lights, both T-5 and LED´s, are equipped with performance enhancing reflectors. Delivery includes T-5 lamps in the colour of your choice.

Automatic 24 hour light management

GEMINI utilises the same light management which has made our VERVvE models so successful. Realistic 24 hour daily light cycles with diversely coloured sunrises and sunsets, as well as the entire spectrum of special effects with weather simulation or moonlight simulation with life-like cycles, put your aquarium in the best possible light.

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Intelligent Colour Choices

Colour choices and intensity regulation

The LED groups offer three independently programmable colour channels, each with up to eight switching points per day respectively. Additionally, both pairs of T-5 tubes are activated according to your wish. The light distribution of the T-5 lamps are constructed and designed in such a way that they complement the LED groups in a meaningful way.

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Easy to control – with your
Computer, Smartphone or Tablet-PC

Simplest operation

The intuitive steering software of iPhone/iPad or android devices make programming and operating the GEMINI child’s play. Using the particularly secure Bluetooth wireless connection, a direct connection between your device and the lighting system is established, without elaborate set up, or temperamental internet solutions.

Plug & Play

This says it all – unpack, switch on, and you´re ready to go, everything is included in your delivery – no additional accessories are necessary.

Mounting: the choice is yours

Mounted on the wall or suspended from the ceiling – the Gemini, constructed from high quality aluminium, is as flexible as your needs. Various mounting components allow wall or ceiling suspension.

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Inseparably connected:
Design and Quality

The slim construction with functional ventilation grilles is manufactured from high quality salt water resistant aluminium, all components are integrated in the lamp casing.

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GEMINI References

Numerous customers have been relying on their aquarium lighting for years. Here we show you pictures and videos about the GEMINI, which kindly have been provided to us by our customers.

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Highlights GEMINI

  • Premium-grade powder coating, white or irridium
  • Convenient wireless regulation of the lamp via BLUETOOTH
  • T-5 lamps (4) in two circles, separately switchable
  • 0-100% dimmable and controllable LED Boards
    with novel state-of-the-art CREE LEDs



  • 3 LED channels, LED cluster with mirrored reflectors
  • Complete daylight and weather simulation
  • Real moon phase regulation
  • Multi-point light regulation through the well known VERVVE software
  • Integrated cooling elements with almost silent active cooling
  • perfect illumination without shading the coral

GEMINI Details

  • Dimensions and Recommendation
  • Colours
  • Mounting & Equipment
  • Download

Dimensions & Recommendation

  GEMINI 900 mm
GEMINI 600 mm**
Dimensions: 900 x 420 x 35 mm 600 x 420 x 35 mm
Equipment: 3 LED Cluster / max. 150W
4 x 39 Watt T-5
2 LED Cluster / max. 100W
4 x 24 Watt T-5
LED Board:
VIVA marine
7 x blue
6 x cool white
3 x royal blue
 VIVA marine
7 x blue
6 x cool white
3 x royal blue
Recommendation: for marine aquariums
with dimensions up to 
100 x 60 cm
for marine aquariums
with dimensions up to 
70 x 60 cm


  • Complete daylight simulation for sunrises and sunsets by means of individually dimmable LED groups and additional on/off switchable T-5 lamp groups
  • Moonlight simulation with moon phases, freely selectable moon stages and programmable light output
  • Freely configurable cloud simulation
  • Two programmes for the preselection of installed lighting programmes
  • Data storage of all programme, providing safety in the case of a power outage
  • Three individual LED colour channels with up to eight freely selectable switching points, and two separately controllable T-5 light channels
  • Programming of the lights via Bluetooth


  • 230 Volt mains voltage
  • 24 Volt operating voltage
    (a corresponding power supply unit is included in delivery)
  • 230 Volt mains voltage
  • 24 Volt operating voltage
    (a corresponding power supply unit is included in delivery)


LED continuously adjustable from 0-150 Watts
T-5 switchable in two groups 4x39 Watts

LED continuously adjustable from 0-100 Watts
T-5 switchable in two groups 4x24 Watts

*This information consists of approximate lighting suggestions for aquarium illumination, which have been researched with great care. However we cannot ensure the accuracy, nor take on the liability for this information. This information, and the technical details do not constitute a recommendation in individual cases. In case of doubt, we recommend that you contact your local aquarium specialist
**Preliminary model variants /model variants in preparation.



Giesemann brings colour to your aquarium

Standard colours 
without surcharge


Polar withe


Monting components
and Equipment




Monting components

Hanging suspension kit for GEMINI
with hight- and gradiant-adjustment 
L =1500 mm

MATRIXX II Stahlseilset


Aquarium mounting set 
Set with two units for GEMINI
Width = 44cm; for aquariums up to 15mm glass, length from -20cm to +12cm of light body.
Mounting height of the light = 85 mm over aquarium edge.







Find here the GEMINI manual



controlling the GEMINI via Bluetooth please use the VERVvE App


Frequently asked questions please find here



Please find products and prices in our SHOP.

The GIESEMANN Products may be found at premium aquaristic shops all over the world. Please ask your dealer for detailed information and aquaristic consultation.