Inneedofbuds
Well-Known Member
Lighting Duration, etc.
good read for people still trying to figure out the whole watts/lumens thing.
good read for people still trying to figure out the whole watts/lumens thing.
"Watts, lumens and hogwash" by Wright Huntley
- Thread starter Inneedofbuds
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xbravoz
Well-Known Member
Inneedofbuds
Well-Known Member
Ok, as plainly as I can say it.all the contradicting info is very frustrating to us noobs that dont have experience to know the truth...so did I waste my money ordering the 6500K T5 HO lights that i'm picking up tomorrow...with their high lumen rating....who knows at this point....I hear so much emphasis on high lumen ratings...lumens based on human sight....high lumens for good plant growth...which is it ????
Lumens account for all amount of light that can be seen by the human eye. This is more light than a plant can use. For example, you could have a bright green bulb rated at 50,000 lumens. The human eye can see green, so all of that green light has a lumen rating. However, since plants use very little green light, only a small portion of those 50,000 lumens would be used by the plant. Now, if a light was a red light or a blue light, two spectrums that plants use very much, than that 50,000 lumens would mean a lot more because the plants is using more of those lumens. If you have two bulbs with identical spectrums (spectrums being the different wavelengths of light, blue, red, yellow, etc) than the one with the highest lumens is going to be the best choice. However, if one bulbs is rated at 50,000 lumens with more green and yellow light than red and blue, than you would be better off getting a bulb rated at 25,000 lumens that had more red and blue spectrum. Make sense?