Thanks for the effort! After a quick double check I found the 930s are best for bloom (more deep red) @ 1.9 umol/sec...whatever that converts to.
Where did you get that info from?
The 1.9 figure is per watt, so multiply it by 315 (598.5 umol/s).
That's actually the figure for the Agro bulb, I've seen some sites that confuse the two (930 & Agro).