Veg, Bloom or Full Spectrum?

To you experienced growers, I have read so many different opinions about using veg, and bloom switch together, full spectrum. What's your experience? You just use veg during veg? Bloom during flower, or both the whole time while growing?

Both switches on

Don't overthink it. Full spectrum always. Just like the sun.

Moflow said:

Both switches on

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Shape Shifter said:

Don't overthink it. Full spectrum always. Just like the sun.

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Thanks guys, input appreciated.