scented phals vs artificial light

[vyltan]

Am currently growing about 40 hybrid phals under a 430 watts modified HPS (hortilux) lamp 12 hrs/day. I get foot-candle readings from 1400 to 700 depending on plant position on the 4 x 8 table. Growing and flowering is good with MSU fertilizing at 5ml per gallon. But my violacea hybrids at 800 fc smell less than when i bought them from producer (greenhouse growing).

So my question is: anyone noticed that sunlight vs artificial light (and type of artificial light) can modify the intensity of fragrance in phals?