I've also raised L strain rotifers with copepods (accidental introduction) and was able to provide supplemental feedings to dwarfs (for say, a failed hatch of bbs). For a while, I had such a high yield, I was able to feed my dwarves exclusively copepods and rots for weeks at a time.
I used two 5 gallon buckets that were lightly aerated. I had my highest yield feeding live phytoplankton, but had good yields using frozen phyto. The only problem I had was occasional crashes, but since it was only supplemental and I still hatched bbs most of the time, that wasn't a problem.