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NEW Con Alert! This involves lights advertising they are made with "Super Flux" or "Automotive" LED's. Please go to the Led Cons" section of this website to read more!
. Why Grow with LEDs?
. In theory leds offer a huge advantage over traditional grow lights. For example a 600 watt metal halide lamp only produces 210 watts of photosynthetically active radiation, that is of the 600 watts the lamp consumes, only 210 watts is actually going to grow the plant, the rest is wasted! The other 390 watts is converted to heat or light that the plant cant use. With leds it is possible to target all the power not just into usable light, but do it at the wavelengths the plant can use most efficiently. This means that a 210 watt led light can grow plants as well as a 600 watt standard light but only use 1/3 of the electricity. Leds offer some additional but very important advantages:
  • They are very reliable and will last pretty much for ever. A good quality led that is cooled sufficiently will deliver at least 70% of its original light after more than 16 years of normal growing (based on 70,00 hours lifespan and 12 hours a day).
  • They produce very little heat so can be used in small spaces impossible to utilise with traditional lights.
  • Low heat means less need for noisy ventilation and less uptake of expensive nutrients, which in turn means less chemically taste in plants grown under leds.

Unfortunately led grow lights have not lived up to their potential. This has been for four reasons:

  1. Manufacturers made unrealistic claims such as a 90 watt UFO light being able to replace 600 or even 1000 watts of HID lights. Leds are great but they're not magic!
  2. Leds were not efficient enough or cheap enough to realistically replace HID lights. Contrary to popular belief, HID lights are very efficient light sources. Leds only reached the point where they could compete at a reasonable price about a 18 months ago.
  3. Poor spectral balance which didn't match the plants requirements and often included totally useless wavelengths like orange and green!
  4. Manufacturers used (and still do) cheap Chinese leds which only put out a fraction of the light of top quality leds but do generate a lot of heat. Look at the current crop of lights from vendors that want you to replace a 600 watt HID with a 600 watt led light!
  5. The manufacturers made the lights as cheaply as possible, using unsuitable and low grade components and poor design. This leads to very high led operating temperatures which causes the lights to dim quickly and fail after 2 years or (a lot) less.
Unfortunately these are all pretty much still problems. Now manufacturers are attempting to overcome the low output of cheap leds by using them in ever greater numbers (again 600 watt led lights!). They are still being made with low grade components and the increase in the number of leds just makes the heat problem worse.

The solution as it turns out is pretty simple. Design and build a light using the best quality materials and components and a design which spreads and dissipates the heat to maximise brightness and led life.

. Which Light is Best for You?
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Plant Photonics makes 4 versions of its lights.

General Purpose Our all round light. Has an intermediate spectral mix with a Red:Blue ratio of 5.2:1. They give excellent results in both vegging (including mother plants) and flowering, producing compact bushy plants with a short inter nodal distance and an excellent harvest.

Vegging These are a special purpose light having a Red:Blue ratio of 4:1. They are ideal for the growth/vegging phase and for mother plants. They produce compact, bushy plants with the shortest inter nodal distance. They are NOT suitable for flowering. The price is the same as for a General Purpose light.

Flowering These are a special purpose light having a Red:Blue ratio of 7:1. They are ideal for the flowering phase, with rapid flowering and the best possible yield. Unlike HPS lights, they still have a substantial blue light content, which is essential for the best flavour and highest resin production. The price is the same as for a General Purpose light.

Dual Spectrum A unique Plant Photonics development, these lights offer the grower the ability to select optimised vegging and flowering spectrum's at the flick of a switch! They have settings for both a 4:1 vegging spectrum and a 7:1 flowering spectrum, giving the absolute optimum results. These lights are more expensive than a General Purpose light.

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Coverage area of each of our lights per power rating.

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