I had a look at these LED's on flea bay but am a bit confused and wary of ratings and outputs. I thought the red/ purple lights were best for growing as that's what I have seen touted as grow lights but also not sure if they are just white LED's filtered and would in fact give the same usable output as the white ones?
George65;
The reds and purple lights are the real ones. The ambient lights were actually harder to dope in the early days, which is why they were higher in costs.
I'm like Fused; I use the white lights for root growth, I keep them directional to keep algae growth down as much as possible.
When purchasing LEDs for long trem growth look for people who show the NM numbers, those are the wave lengths and take to power number with a grain of sand.
The plants like the Reds for vine and leaf growth and the blue to purple for fruit/veggie/flower production.
My ratio is 8 Reds to 5 blues to 1 purple.
BUT that's what I built for tomatoes and leafy greens.
The Green lights will work (some say they won't) it's just that plants will only absorb 1/100th of what they will get from the other wave lengths.
OR merely buy the bright whites , they're made of the full spectrum
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Cheers
Bruce S