£279.00

Amethyst DS 51 (Dual Spectrum) Led Grow Light
[Amethyst 51]

*Equal to approximately 250 watts of HPS
*Actual Led Power draw 90 watts.

Powered by 51 super efficient German made Osram Oslon SSL80 Horticultural leds, this light easily exceeds the PAR output of a 250 watt MH or HPS light while only drawing 90 watts.

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Our unique design ensures the leds operate up to 50C cooler than in any other light. This low temperature results in the leds operating more efficiently , allowing our lights to put out more PAR light for every watt than any other light on the market, even lights using the same leds!b> The low operating temperature also greatly increases the useful life of the leds, ensuring a genuine 20+ year life. Finally, our lights are the only ones in the world which can work indefinitely with a faulty fan with no risk of damage – other lights will fail within minutes and require an entire block of leds to be replaced.
    Growing Area:
  • Perfect for 60 x 60cm
  • OK for 70 x 70cm

TECHNICAL SPECIFICATIONS

  • 3 Modes/2 Spectrums:
    1. Eco Vegging
    2. High Power Vegging
    3. High Power Flowering
  • 2 x 60 watt constant current, waterproof power supplies.
  • 1 x 12 cm German made Xilence fan.
  • Led power 90 watts. Total power consumption 100 watts.
  • Size 35 cm x 35 cm x 12 cm
  • Available in 170 – 250 VAC (Europe) 90 – 130 VAC (US)
  • 2 mains connections for daisy chaining (recommended maximum 420 watts per mains plug.
  • Power supply status indicator leds (1 per power supply).
  • Total Weight - 6 kilos
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    Learn More About Why Our Led Lights Are So Good!

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    Leds and Heat

    Leds are very sensitive to heat, as their temperature increases their efficiency and therefore light output drops dramatically. At 25C they produce their full rated output, but at 85C which is the actual operating temperature found in most lights (source Cree and Osram) they only produce 55% of their rated output (please see graph below – source Osram).
    Plant Photonics lights were designed especially to operate the leds at the lowest possible temperature, normally only about 10C above the grow room temperature and therefore the leds produce 90% - 95% of their rated output, a massive 73% more light than the same leds would produce in a conventionally designed light!
    Light Output VS Temperature (source - Osram)
    At the same time the reliability and life span of the leds is greatly increased. Heat is the cause of 99% of all led failures and 100% of the reduction of brightness over time. Leds are very sensitive to heat, as their temperature increases their efficiency and therefore light output drops dramatically. At 25C they produce their full rated output, but at 85C which is the actual operating temperature found in most lights (source Cree and Osram) they only produce 55% of their rated output (please see graph below – source Osram).
    Plant Photonics lights were designed especially to operate the leds at the lowest possible temperature, normally only about 10C above the grow room temperature and therefore the leds produce 90% - 95% of their rated output, a massive 73% more light than the same leds would produce in a conventionally designed light!
    At the same time the reliability and life span of the leds is greatly increased. Heat is the cause of 99% of all led failures and 100% of the reduction of brightness over time.
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    How We Do It

    Our lights have 2 unique design features which allow them to keep the leds so cool:
    1. A "case-less design" which allows heat to "escape" instead of being trapped in the case. Normally a hot object (in grow lights its the power supplies and the heat sinks for the leds) gets rid of 80% - 90% of its heat as infra red radiation (radiative cooling) and only 10% - 20% of the heat to the air (convective cooling). Putting everything in a case traps the heat, resulting in high temperatures and requiring powerful and noisy fans. Our open design allows for sufficient natural cooling to keep the leds well within their rated temperature range, then we add fans to make then even cooler.
    2. A very large area led array. Our circuit boards are far larger than those used by other companies. Instead of crowding the leds together (which concentrates the heat), we spread them out over a huge circuit board. This minimises heat buildup and allows the circuit board itself to act as a high capacity heat sink. We also use the best available quality metal core printed circuit boards (MCPCB´s) which quickly remove heat from the delicate leds, see below for more information.
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    Light Features

    Dual Spectrum: "Eco Vegging" Modes


    Our lights feature 2 different spectrum's for optimum plant development. Vegging mode provides a spectrum rich in blue light for the plants growth phase. Flowering mode provides a redder spectrum for optimal flowering and fruiting. Our original circuit design ensures full power output in both modes. Our lights also offer a "Eco Vegging" mode which reduces power consumption by about 40% while providing plenty of light for seedlings and clones.
    ECO, Vegging and Flowering Mode
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    Zero Down Time

    No matter how well a light is made, there is a chance something will eventually fail. Imagine the problems if your light dies half way through a grow! With a Plant photonics light you have nothing to worry about. Our lights are designed to keep working in the event of a fan or power supply failure and just as importantly they are designed to be repairable by the owner, not just by us. Replacing a fan or power supply can be done by the owner in about 2 minutes with no special tools or knowledge. This is an important feature which is unique to our lights.
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    Light Components

    The Leds

    For the best grow room results you need the best leds. Plant Photonics uses Osram Oslon SSL80 leds which are the most efficient leds on the market and are available in all horticultural wavelengths.
    We use the SSL80 version of the leds because normal leds spread the light over about 150 degrees, resulting in wasted light, which is why many grow light companies use add on lenses (often refereed to as "secondary optics) to concentrate the light onto the plants. Unfortunately these lose about 20% of the leds output due to internal reflections and absorption by the plastic of the lens. The Osram SSL80 leds have an 80 degree lens built in so the plants get all the light with no loss or waste.
    OSRAM LED
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    The Circuit Boards

    We use the highest grade metal core printed circuit boards (MCPCB´s) in the industry with a thermal conductivity of 2.2 W/K, which is the highest conductivity available. They are 2mm thick and feature an extra thick copper layer. Copper heat spreaders built into the circuit board draw heat away from the leds and transfer it to the circuit board. To finish off, the electrical contacts are gold plated for the ultimate in reliability.
    Plantphotonics Circuit Board
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    Plantphotonics fan for cooling

    Cooling

    We use ultra quiet and reliable Xilence fans and run them at reduced speed for even quieter operation and longer life. The result is an incredibly quiet 17 db, which is so quiet they are completely inaudible even a few inches away. Life span is approximately 10+ years.
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    Power Supplies

    We use high quality, constant current, waterproof power supplies. Our power supplies use top quality Japanese and US components for superb reliability. Unlike most power supplies they are filled with a special thermally conductive silicone instead of resin. This keeps the components much cooler and increases efficiency and reliability.
    Plantphotonics Power Supply
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    Hardware

    The lights are constructed of architectural grade anodised aluminium or Dupont powder coated aluminium which is completely immune to all chemicals and humidity found in a grow room environment. All nuts and bolts are A2 stainless and are manufactured in Germany.
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    SHIPPING CHARGES - Please view the shipping charges by country here.
    USER MANUAL - Download the user manual for this light below:
    English User Manual French User Manual Spanish User Manual

    NOTE. If you DO NOT wish to register on the website, but would like to purchase our led lights, please contact us and we will send you a direct PayPal or bank transfer invoice.

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