Is My Light Right? or too Bright? ... like a Kite?

[Ray]

I agree with Ross - take it back and get the one closest to a 5000°K color temperature, as it will likely have similar out put levels at the spectral regions surrounding those needed by the plant - 425 to 450 nm and 650-675 nm.

If I remember correctly, the red end of the spectrum primarily affects vegetative growth, and the blue end favors blooming (somebody better check me on that before accepting it), which is why incandescent "grow lights" often have a blue coating and fluorescent ones have a pinker phosphor than does "cool white".

For the all-around best environment, a balance of the two is the target.