People are sucesfully rasing a tonsa copepods on o. marina. The o. marina can be fed algae paste and the A. Tonsa copepods will feed on the o. marina. No need for culturing phyto.
I'm not sure exactly about the rotifers but I'm pretty sure rots will eat copepods and probably directrly o. marina as well. Ask the folks at marinebreeder. They will steer you the right direction for sure.

http://www.marinebreeder.org/phpbb/view ... 283&t=7164

I've yet to do it but its pretty proven. I have a nice fellow that is going to ship me some of each so I can start myself and he's only charging me shipping.