3 ms·
LEDs are significantly more efficient than CFL. Is there something about the spectrum plants needs that requires CFL?
by ahupp 10y ago
LEDs are significantly more efficient than CFL. Is there something about the spectrum plants needs that requires CFL?
- tomsaffell 10y agoNot in general. They are both around 60 lm/W. Of course there are exceptions. https://en.wikipedia.org/wiki/Luminous_efficacy#Lighting_efficiency https://en.wikipedia.org/wiki/Luminous_efficacy#Lighting_eff...
- wlesieutre 10y ago60 lm/W is very low these days. Commercially available screw-base A21 bulbs like Cree's "100W replacement daylight" (17,000 lumens at 15W) are up over 110 lm/W. You can get that for $14 at Home Depot. http://creebulb.com/100-watt-replacement-daylight http://creebulb.com/100-watt-replacement-daylight http://www.homedepot.com/p/Cree-100W-Equivalent-Daylight-5000K-A21-Dimmable-LED-Light-Bulb-SA21-16050MDFD-12DE26-1-11/207169063 http://www.homedepot.com/p/Cree-100W-Equivalent-Daylight-500...
- _joel 10y agoIt depends on the quality of the LED and what it's designed for. Some deliver better spectrum response for plants and for different parts of their life-cycle. Vegetative and flowering stages may require slightly different optimal amounts of energy at particular wavelengths but it's not strictly necessary. A good LED lamp designed for growing should be more than adequate, then tend to have fill-ins for the wavelengths needed.