LED Hanging Distance

Here at Budmaster LED we design our lights with the grower and the space they are trying to cover in mind. For example all of our Budmaster lamps are specifically designed to fit certain common grow tent areas such as 120cm x 120cm x 200cm.

Using effective vertical penetration with our custom lens we ensure the target area has effective PPFD levels whilst minimizing reflectance from the surrounding area to increase efficiency by up to 10%

We generally recommend that your plants grow no closer than 2ft to the light to make best use of the output, however strong healthy plants can grow right into the light with very little adverse effect on the plants.

To get the right amount of light to your plants at the right time consult the chart below.

 
Measuring Average PPFD

You will see many companies displaying PPFD reading from a quantum meter on their websites either via a central point measurement or a PPFD grid.

Quantum / PPFD meters are not a very accurate way of ascertaining average PPFD levels but are intended for doing basic field measurements of a single point which is not indicative of your overall PPFD.

If the spectral power distribution (SPD) of a light source is known across the relevant wavelengths (400-700 nm), then the amount of photosynthetic energy available to plants can be determined.

Based on its SPD, a light source will have a conversion factor that can be used to translate luminous flux density (illuminance) received by the plant into photosynthetic photon flux density (PPFD), in μmol/s-m2.

Click here for the Mathematical Basis for the Calculation of PPFD.

 
Getting the Right Average PPFD for Your Environment

It is of course very important that you use your lamps in the best way possible to get the most out of your grow room, with that in mind please refer to the guide for recommendations on the hanging distance of our lamps.

Of course you may find that by adding additional carbon dioxide you can increase the amount of available light to your plants.

Click the lamp description links to see PPFD maps.

Growth Stage Minimum Levels Required µmol/m2/s
  (Average Across Full Working Plane)
Vegatative 200 - 300 µmol/m2/s
Early Bloom 300 - 400 µmol/m2/s
Final Bloom 500 - 600 µmol/m2/s
Exceptional Bloom 600 - 800 µmol/m2/s
 
Lamp Growth Stage Power Minimum Required µmol/m2/s Average PPFD Across 1.2sqm Area µmol/m2/s
Budmaster G.O.D-9 Vegatative 166w 100 - 300 µmol/m2/s 426µmol/m2/s at 120cm from Light Source
  Early Bloom 373.5w 300 - 400 µmol/m2/s 867µmol/m2/s at 90cm from Light Source
  Final Bloom 373.5w 500 - 600 µmol/m2/s 952µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 373.5w 600 - 800 µmol/m2/s 1008µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 1sqm Area µmol/m2/s
Budmaster G.O.D-6 Vegatative 124.5w 100 - 300 µmol/m2/s 418µmol/m2/s at 120cm from Light Source
  Early Bloom 249w 300 - 400 µmol/m2/s 784µmol/m2/s at 90cm from Light Source
  Final Bloom 249w 500 - 600 µmol/m2/s 869µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 249w 600 - 800 µmol/m2/s 985µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 1sqm Area µmol/m2/s
Budmaster G.O.D-4 Vegatative 84w 100 - 300 µmol/m2/s 240µmol/m2/s at 120cm from Light Source
  Early Bloom 166w 300 - 400 µmol/m2/s 552µmol/m2/s at 90cm from Light Source
  Final Bloom 166w 500 - 600 µmol/m2/s 615µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 166w 600 - 800 µmol/m2/s 724µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 80 x 40cm Area µmol/m2/s
Budmaster G.O.D-2 Vegatative 83w 100 - 300 µmol/m2/s 395µmol/m2/s at 120cm from Light Source
  Early Bloom 83w 300 - 400 µmol/m2/s 591µmol/m2/s at 90cm from Light Source
  Final Bloom 83w 500 - 600 µmol/m2/s 808µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 83w 600 - 800 µmol/m2/s 865µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 1.2sqm Area µmol/m2/s
Budmaster HPS-9 Vegatative 200w 100 - 300 µmol/m2/s 296µmol/m2/s at 120cm from Light Source
  Early Bloom 360w 300 - 400 µmol/m2/s 496µmol/m2/s at 90cm from Light Source
  Final Bloom 360w 500 - 600 µmol/m2/s 539µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 360w 600 - 800 µmol/m2/s 576µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 1sqm Area µmol/m2/s
Budmaster HPS-6 Vegatative 120w 100 - 300 µmol/m2/s 240µmol/m2/s at 120cm from Light Source
  Early Bloom 240w 300 - 400 µmol/m2/s 440µmol/m2/s at 90cm from Light Source
  Final Bloom 240w 500 - 600 µmol/m2/s 486µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 240w 600 - 800 µmol/m2/s 547µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 1sqm Area µmol/m2/s
Budmaster HPS-4 Vegatative 160w 100 - 300 µmol/m2/s 309µmol/m2/s at 120cm from Light Source
  Early Bloom 160w 300 - 400 µmol/m2/s 319µmol/m2/s at 90cm from Light Source
  Final Bloom 160w 500 - 600 µmol/m2/s 362µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 160w 600 - 800 µmol/m2/s 413µmol/m2/s at 30cm from Light Source
         
        Average PPFD Across 80 x 40cm Area µmol/m2/s
Budmaster HPS-2 Vegatative 80w 100 - 300 µmol/m2/s 220µmol/m2/s at 120cm from Light Source
  Early Bloom 80w 300 - 400 µmol/m2/s 338µmol/m2/s at 90cm from Light Source
  Final Bloom 80w 500 - 600 µmol/m2/s 480µmol/m2/s at 60cm from Light Source
  Exceptional Bloom 80w 600 - 800 µmol/m2/s 513µmol/m2/s at 30cm from Light Source