Questions on PPFD and CCT

[Big Boy69]

question is, The PPFD (Photosynthetic Photon Flux Density) and the CCT, (Correlated Color Temp).
On Sanjays site that's how the spectral plots are listed. So does the higher the PPFD mean that the bulb has more penetration through water to the corals and the CCT is the rating on how true the color is to what the bulb is called? eg., 10K, 12K

I'm looking into buying new bulbs and want to see what everything really means so I have a better way of looking at the data.

 

[Big Boy69]

TTT

 

[kgross]

You are very close. The PPFD is the amount of useable light the bulb does put out, and CCT is the real color temp of the bulb, not the manufactures marketing claim.

 

[Big Boy69]

Thank You.