Coral food

[David]

Please help. What is best source of food for soft corals (ie: Xenia, Kenya tree, polyps, mushrooms, brains, bubble coral, Goniopora corals and more to come) . I was told o use:
- Reef_resh
- Phytoplankton
- Reef-riods
Which one should I get or do I need them all. Thanks in advance....