The average LED grow light draws about 32 watts to cover 1 sq ft for flowering. Compare this to a typical HID fixture which rings in at 40 watts per square foot (assuming a 5′ x 5′ area, or 25 sq ft coverage area).

How many leds do you need for a room?

To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.

What is the range of LED lights?

The Colour Scale Kelvins range from 2700K to 6500K. Incidentally, the term “temperature” doesn’t have anything to do with how hot a bulb feels to the touch. LED lights come in a range of colours from soft yellows to bright whites. Warm light tends toward yellows, reds, and oranges.