I've been testing out the RGComplete with O. marina lately. O. marina certainly seems to survive on it (I was feeding 2 gallons 1.75 mL of RGComplete twice per day), but the culture density looks less to me than when I add NRich to the mix.
If it were me, I would likely use RGComplete as a culture maintenance food (it's certainly easier than making a food mix and adding ClorAmX) and then start enriching when it came time to start feeding larvae.
With the caveat: I have not used the RGComplete as a sole food O. marina and then used that as a long-term food for copepods. I can't tell you whether the copepods will get enough nutrition to survive long-term on that diet. I'm fairly sure Apocyclops will have no trouble, but it's just too early to tell yet.
Any thoughts?