also found something of interest, the 3500k may be better than the 2700k/3000k goes further into the red spectrum, because it still contains some blue phosphor,
which emits some small amts of red. this is how the codes break down FB(code for a U bend fluorescent), 31 or 32, represents the wattage, 8(represents its a t8 bulb diamter) 30(means 3000k)
so with that said left graph is the 3000k and the right graph is 3500k, right graph has both more blue and red and but the reason the other bulb(3000k) gets a higher kelvin rating because it emits more green and yellow.
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