What is the best grow light for the vegetation cycle of cannabis plants
Red radiation (around 700nm) is considered most efficient at driving photosynthesis – especially in the flowering stage for biomass growth (important to Cannabis growers). Blue light is essential for both the vegetative and flowering stages of plant growth, but mainly for establishing vegetative and structural growth.
Of course, it should make sure what’s the PPFD is requested by cannabis from grow lights, As we all know. different Par (PPFD) value for different stages. Recommended best PAR value:
Seedling stage: 300-800µmol
Vegetative stage: 800-1000µmol
Flower stage: 1000-12000µmol
Right now one of the best is made by Horticulture Lighting Group (HLG), they make the HLG-600 B-Spec specifically for vegging cannabis,
HLG 600 Bspec®
These are quantum board led lights so they are very efficient and do not get hot or use too much electricity. The light is large enough for a 4×4 tent, there are smaller lights available for 2×4 or 3×3 tents, depending on what you need.
HLG also makes the HLG-600 R-Spec for flowering, you can use this light to veg as well so if you can only get one light, get this light for veg and flower:
Dmxgrow LP960W full spectrum led grow light strip suitable for vegetation and flowering stage of cannabis. High PPFD 2200umol/m2/s and high yield for cannabis growing ,up to 3.3lb~3.5lb per light. It combined with 8 light strips and waterproof IP66.Knob dimming and RJ port daisy chain system by extra controller for indoor commercial cannabis growing up to 200 grow light led. With Newest FIN heat SINK technology improved heat dissipation speed 40% than other standards grow lights led. Energy saving 30%. Slim and less weight, Net Weight about 19kg with one high power 960W , Also it with difference install ways, 2 foldable and 4 foldable grow light for options, Taking Top brand LED chip like Samsung lm301b or Samsung 281b, Philips and Seoul ,UL certificated drivers. Especially designed for cannabis germination and flowering ,also called flowering led grow light bars.