Lux difference between MH and HPS bulbs

Discussion in 'Lighting' started by Flynn, Aug 9, 2019.

  1. Hello! For flowering changed bulb from MH to HPS (white/blue specter to red/orange). Took a mesurment with luxmeter and it reads no more that 500lx, while for MH it readings were around 48000lx. Both lamps are 400w Phillips. Any suggestions why is such a huge diffrence?
     
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