You left out the conversion of Photosynthetically Active Radiation (PAR) Units to ɥmoles of photons per square meter per second.
https://www.researchgate.net/profile/Fatemeh-Meskini/post/How-can-I-convert-light-intensity-in-lux-to-micro-moles-per-square-meter-per-second-of-PAR/attachment/59d6326bc49f478072ea18e1/AS%3A273633266601989%401442250662257/download/Conversion_lux.pdf
Silly me. So forgetful.