


Best Grow Light for Hydroponics (2026): Coverage, Not Watts
Grow lights are sold on wattage, which is the one number that tells you almost nothing about whether plants will grow. Watts measure electricity consumed; what a plant responds to is how much usable light actually lands on its leaves. Two lights drawing the same power can differ enormously on that, and the specification that describes it is on the datasheet rather than the box.




































































