Watch Out for Incorrect Grow Lighting Measurements

Not all lighting manufacturers understand how to properly measure and present light outputs for plant growth. As the label below shows, the lamp manufacturer included measurements of lux, but no PPF information. In fact, the label mixes up PAR and lux measurements in an attempt to provide PPFD measurements at different distances from the plant. But, as you now know, lux and PAR are distinct measurements.

Unfortunately, far too many lamps include this kind of incorrect information.

Gardening Under Lights Book