@MysteriousStranger, hey buddy , not always , but some times yes, at the moment Iβm finishisng one run at 50% power so in that case that my ppfd readings round 400 PPfd with a distance of 30 cm from canopy. I use Photone with is an app fo ios and a lux metter and do the math to ppfd. Different stages = different Par and all π growers love buddy ππ
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