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 lights are specifically designed to fit certain common growing areas such as 80cm x 80cm, 1.2m x 1.2m and 1.5m x 1.5m.
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.
Seedling Stage average light required = 50µmol/m2/s
Vegetative Stage average light required = 200 – 400µmol/m2/s
Bloom Stage average light required = 800 – 1000µmol/m2/s
Over 1000µmol/m2/s then add carbon dioxide to see a huge increase in yield.
So by consulting the chart below we can see that in bloom for best results the COB-X-9 should be around 18 inches above the canopy and the GOD-9 should be 3ft above the canopy.