Years ago, I published on ATP/NGA an article about light spectrums and light intensity for plants, @ alex22ccc.
@Poolguy42 is somewhat correct in general, but not knowing the plant(s) variety that you are growing, there is a lot that can't be said because we don't know what sort of light you really need. Spectrum is only part of the equation. Available lumens is just as important. Notice the word "available". The lumens that those tiny bulbs produce is extremely limited for growing most tropical plants. But as I said, I don't know what you are growing.
Welcome to NGA, Poolguy42.
