4 Leds (4.2 Watt) give the same light as a 50 watt spot
The spectrum is very simular to the Photosythese which make leds ideal for the growth of all flowers and the led don't get warm like a spot.
Sorry but my language for Orchids and Leds is German so I hope you can understand what i have written.
Thanks Doreen
The information is useful, i have set up a terrarium with orchids (mainly) and needs some good light, i had put the flourescent one and not happy with the quantum.
sastry