Hey Shrubs, saw you were using Sun Pulse which I believe PSMH, saw a post where you were talking about PAR, and some other measurements, you were absolutely right, Lumens and plants have nothing to do with each other, PAR, PUR, or really photon flux density and something the Sun Pulse people caught onto, electron volt density are far more useful forms of measurement from a plant central perspective. I originally came to this knowledge studying LED lighting technologies for plants, through the work of others all over the web, inheriting their knowledge. I have sent you a friend request, I have a few short and concise questions about the Sun Pulse, as I am looking to expand a medical grow, and as per right now the options on the table as I see them are either get more Philips Retro-Whites, and magnetic core ballasts, or hopefully go PSMH on digital if possible, I thank you for your time in advance. Looking forward to hearing from you.