First I'd like to say I'm currently on page 97 of this thread and intend on reading it all, but I think I've found the best 48" T5 that covers the best red spectrum.. after some looking.
we know that chlorophyll A and B peaks at 642nm and 662nm, check out this bulb
It's by Aquamedic, its called a "Planta" bulb.
http://www.aqua-medic.com/t5_bulbs.shtml googling it brings up plenty of discussions about this light on aquarium forums, it's been around for a while! I think this is pr0f's secret bulb?
Also I don't know why so many are suggesting the 454's and 75.25's, they Suck imo. And since we don't know the spectral distribution of that fuji purple, we don't know what it is doing. So I'd say toss that out too and go with ATI Blue Plus (for 450nm) and UVL Super Actinic (for 435nm) since those two ensure the blue spectrum is covered for both Cholorophyll at the blue end. I GUESS you could change out the Super Actinic for the Coral Wave if you think light at 740-780nm is beneficial, even at the sacrifice of like 35-40% of the bulb. But the fact that 100% of your light is nearly peaking at 420nm make the super actinic and blue plus great. Even though you have the charts you all have bulbs with high spikes of useless colors (454, 72.25, red sun) What's your reasoning behind those bulbs?
As for red, I'd have to see what you guys think about that Planta bulb, I think the Red Suns are garbage, you need red light that peaks at 640nm and 660nm, if you look at Red Sun charts you would see that ALL of the red is lost at 640nm... making them useless.
I think you should replace the rest with 6500k grow bulbs... any spectrums on those?
Edit: looked around a bit and found Aquafloro by Gieseman. It'd be good for completing the spectrum in a "veg" combination.
I veg for 1 month currently under my 8 bulb T5.. I'm putting a divider inbetween next cycle and changing 4 of the bulbs for the best veg combo and IMO that would be
1 ATI Blue Plus
1 UBL Super Actinic
1 Aquafloro
1 undecided... But I am so desperate to test the Fiji under a spectroradiometer. Anyone have one layin around?