PPFD Question! I am new to the plant game and am trying to figure out the best placements for my plants within my room. I have a south- and west- facing window in my bedroom. The south-facing window has another white apartment building right next to it, about 30 feet away, so I don’t believe it gets the full sun it otherwise would. However, the west-facing window is completely unobstructed. I’ve used light meters on my phone (specifically Photone) to attempt to gauge the PPFD readings in order to put my plants where they’d be the happiest, but the readings just don’t seem to add up to me and I’m so confused. When I put my phone/meter directly up to my west-facing window at the sunniest time of the day for that window (shown in second image, at 5pm), the highest reading I get is 122 umol/m^2/s, which is like ‘moderate light,’ except it’s when it’s direct sun. When I pull back even a foot from the window, it falls to ~15-20 umol/m^2/s. So for my plants that can’t handle direct sunlight, I feel I have no options as to where I can place them for adequate ‘bright, indirect light.’ Any suggestions? Is my light meter possibly off?
