100W full-spectrum Lumatek BAR 2.9 supplementary luminaire
The high-tech innovation in grow lights in the form of individual supplementary LED bars with a full light spectrum from the British brand Lumatek is described by the manufacturer in just two words – perfection and versatility. Through this article, discover the roots of these ambitious descriptions, which are certainly not exaggerated.

A very practical full-spectrum LED bar, made by pioneers in the field of LED grow lights, was developed for a wide range of applications within indoor plant cultivation and thus greatly simplifies the process of optimising herb growth for growers like no supplementary lamp before it. What practical uses does it therefore have?
- The main light source for clones and seedlings, or for seed germination in a propagator.
- Supplementary lighting for shaded areas in a grow tent or room.
- Support lighting on the top, bottom or side wall of the growing space.
You may already know that Lumatek is among the manufacturers that publish truly relevant data on the performance of their products, and the following parameters will certainly appeal to you as well:
- Very high ppF output for high intensity of 295 μmol/s.
- Very high efficiency of up to 2.9 μmol/J has no competition on the market in relation to the purchase price. The efficiency of this fixture will vary depending on the input voltage used.

The following factors significantly contribute to the stated values:
- The latest generation of LED diodes from the upper bin (Osram, lumileds). These top-quality diodes not only produce a balanced light spectrum, but are also fully dimmable with 1% increments in light intensity without loss of efficiency for different cultivars or plant development stages.
- Another advantage of these supplementary fixtures is excellent passive cooling that reduces the temperature of the LED diodes.
- New Clear Glue housing technology on the LED bar. Together with the IP65 rating, this results in:
- 99% higher light transmission
- Prevention of light losses
- Extended LED diode lifespan
- Extra resistance to corrosion
- Water resistance
- Dust resistance



This individual supplementary LED bar therefore represents an exceptionally powerful standalone unit for growth and flowering and provides the same output of full-spectrum light radiation, which perfectly imitates natural sunlight for plants, as every bar from the latest fixtures in the ZEUS 2.9 series, but with the difference that it is a completely independent device with its own 100-watt remote driver included in the price. By driver here we mean the ballast for LED panels and bars. (You can also read a separate article Comparing TOP LED lights... about the ZEUS 2.9 series in comparison with the original ZEUS series.) The reliable 100W original Lumatek driver makes the full-spectrum bar a flexible and dynamic LED solution for higher yields.
