How to use LEDs when growing? What wattage, how much does a light cover, should I use different lights when VEG and when Flowering? as much info as possible is appreciated. Thanks!!
basics to follow when using latest gen diodes (Samsung lm301b or lm301h, Bridgelux EB3, etc)
Veg - 15-20w per sf - 4000 to 5000k is usually best. "cooler" blue spectrums help keep the plants short and bush out, and keeps the internode length short
Flower - 30-40W sf - 2700k to 3000k is ideal - "warmer" reds help the plant to stretch and produce fatter frostier buds
Many people use 3500K for both flower and veg, if you are going to use a single spectrum and just dim it during veg stage.
If you can give us an idea of size of your space, length, with, height we can suggest some specific solutions.