The Spectrabox Pro-II is an advanced LED grow with the newest LED technology, like SSP and SPC. This high-tech design makes the Spectrabox Pro-II series the most reliable LED grow light available today. The Pro-II is provided with two powerful Flower Boosters. The switchable Flower Boosters create an ideal growing environment and increases yield by 40% compared to the standard LED grow lights. The Spectrabox Pro-II is available in 150W and 250W and comes with a yellow box.

  150W Spectrabox Pro-II   250W Spectrabox Pro-II      
     
 

Flower Booster
During first growing stage the Flower Boosters are turned off and the Spectrabox Pro-II creates a mostly blue light spectrum; roots and trunk will grow heavy. The last week of growing Flower Booster one must be turned on and the light spectrum is more purple-red; cuttings will stretch and prepare for flowering stage. The switchable Flower Booster create an ideal growing environmen for cuttings and seedlings, so they will grow fast and show no stress.
During flowering stage the second Flower Booster must be turned on and the Spectrabox Pro-II creates an ideal flowering environment withe a more dark-red light spectrum. Yield will be very high quality.

See of green
For maximum yield, it's better to use more pieces of "small" LED grow lights then one big LED light. For example use the 150W Pro-II on 0.5 m2 in stead of 0.8 m2 and the 250W Pro-II on 0.7 m2 in stead of 1 m2. This way the light beams do cross and every plant will get the same amount of light output. Yield will increases tremendously!