Buju09
Active member
http://www.icmag.com/gallery/data/500/46258Caligrower_HPS_chart.jpg, as I am no expert I just stay within the optimal range on the chart, I would just change it by half foot, it could be strain dependent some plants stay really small and you could be better off top'n fim'n or lst/super cropping them and keeping the lights at the height you have Hope some others chime in I like ideas that build off of multiple input