wietefras
Well-Known Member
It's not about the numbers. It's about relative difference and clearly there is practically none between a big COB or a board. While distributed light produced by multiple COBs or led strips crush a board or single large COB.You might want to get some better charts or put some type of numbers on there that's difficult to make heads or tails of.
Bare COB's work great if you can keep your plants within a foot of your lights. They really have poor intensity when it comes to distance, after 18 inches with bare cob's the numbers really drop off quickly. Might work if your in a tight area with limited growth height...but that's not really the greatest way to grow...most quality grow rooms got ceilings 10-12 foot tall so they need lights that can broadcast 24 inches and further
Besides I put the charts with height lines next to it exactly like in the incorrect chart you posted.
Also:
- Light does not "drop off". It spreads.
- Height of a light source is related to distribution and number of light sources over an area. Which means that if you need a height greater than 18" you apparently need the light to spread further. So there is no issue there either.
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