LED to HID equivalence formula / rule of thumb? - LED Grow Lights - International Cannagraphic Magazine Forums

de145 · 07-26-2012, 07:42 PM

If I want to replace a given wattage of HPS (for example) with LED is there a rule of thumb or formula to help choose the LED light?

(I want to use LED to grow tropical sativas and the seed seller states minimum wattage of HPS to grow them and I'm trying to get a handle on what to look for in LED to meet that.)

D9_THC · 07-27-2012, 07:50 PM

I believe that VerdantGreen mentioned that LED are about 10% more efficient, so you would need about 90% of the HPS watts, with efficiency getting better with newer LED technology. Talking about true watts that the LED unit draws.

07-26-2012, 07:42 PM	#1
de145 Member Join Date: Jun 2010 Posts: 325	LED to HID equivalence formula / rule of thumb? If I want to replace a given wattage of HPS (for example) with LED is there a rule of thumb or formula to help choose the LED light? (I want to use LED to grow tropical sativas and the seed seller states minimum wattage of HPS to grow them and I'm trying to get a handle on what to look for in LED to meet that.)
	Quote

07-27-2012, 07:50 PM	#2
D9_THC Member Join Date: Dec 2009 Posts: 77	I believe that VerdantGreen mentioned that LED are about 10% more efficient, so you would need about 90% of the HPS watts, with efficiency getting better with newer LED technology. Talking about true watts that the LED unit draws.
	Quote