DAZ’ling Beautie

Manufacturers give legal advice so that no one can ever say their products caused damage to plants. Phone apps don't read ppfd, they read lux and convert based on a algorithmic guesstimate. Photone is the only plant light meter app on the App Store that is measuring accurately to my knowledge.

You must be compairing the ppfp map to the phone app to even come close to saying it is accurate but ur going against there recommendations is hypocritical and impossible to give an accurate answer dude. Like what's been said you will get a feel for it try weak light hight and turn up and lower according to how your plant likes it or not.. Happy growing

My guess: download Photone, google "cannabis DLI" and just adjust so it fits the current stage of growth. it's the easiest by far and you will develop an actual feeling for it instead of "well in this stage the lamp needs to be raised by 20cm on 80% power" Also i go for DLI and not ppfd