Don’t let manufacturers fool you when they say their product has “high-powered” wattage. Wattage isn’t the best indicator of power. The best grow lights for indoor plants use PAR, PPF, and PPFD instead to gauge how light intensity is measured. That said, you can determine the best wattage by measuring your grow space, then multiplying each square foot by 32. In other words, that’s 32W/sq.ft.
