We feed a combination of reefroids, coral frenzy and mysis shrimpies! Its funny because our zoas and shrooms will sometimes catch the mysis shrimp and try eat them, and you will see this shrimp sticking out of our ricordias mouth.
We get a lot of growth from our zoas when we feed. The ones that don't have a feeding response are typically the slowest growers (but are still growing!)