PJ Diaz
Well-Known Member
Cell phone sensors are unreliable at best, and they are not able to measure PAR accurately. They will attempt to measure LUX, and then use a math formula to convert it to PAR.Im using my samsung sensor with an aplication developed by a riu user , i tested the manufacturer results at the distance they provide and results are similar . Im not inventing this theres a lot of articles saying the ideal ppdf is 900 not more , also i found many articles saying to much ppfd CAN delay flowering, and indeed my plants are showing me that , the only one reciving less then 900 ppfd is the only one with all the pistils brown
What lights are you running, and how far from the plants are they? I highly doubt that excessive ppfd is your issue.