6500k is the best all around light to use.
It mimics the sun at noon and has all the red and blue light you need.
Don't get wrapped up in the color spectrum for budding and so on.
Much of this comes from pot growers wanting their plants to bud which is yet another sales pitch to buy more stuff.
It is daylight hours that cause budding not light spectrum in pot.
In reality it is longer hours of uninterrupted darkness.
It just so happens that that spectrum changes somewhat in the fall of the year.
Tomatoes are not sensitive to daylight hours and budding.
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