I decided to go with this grow bulb because it was the only one I could find that listed it's ppf value in the specs. I had also been previously using the GE BR30 LED grow light (16 micro miles/second) for about 7 months prior to receiving this one and I felt like my plants were doing really well, but I wanted to see if they could do better, grow faster, and produce larger leaves. I don't yet know if 50 micromoles is ideal for my indoor plants and environment (I have them on a shelf next to my western facing window in southern California where it's always sunny), but I will give an update when I see the results. The bulb is heavy, weighing in at 1.2 lbs on my scale. However, fortunately, my lamp can handle the weight. I'm using the Ranarp Ikea work lamp. I have it positioned to give as many plants a boost as possible while prioritizing my FLF, but I could position it to prioritize the top shelf no problem. I've taken a few photos with the footcandle readings at different positions of my setup so you can get a visual of the amount of light you'll get at different distances. My FLF is 26" away and gets ~758 fc. Bottom shelf 44" away gets ~558 fc, second shelf 32" away with the light directed at it ~997 fc, third shelf 24" away gets ~222 and top shelf 22" away gets basically nothing from the light. Hopefully that makes sense... The bulb gets pretty hot but I can keep my hand on it for about 15 seconds, not comfortably though. It's bright, but not harsh and a little on the warm side, much like the BR30 but a bit brighter. Gives my plants the beautiful spotlight they deserve. 👌