Are there any SPS tanks out there that are NOT adding coral food supplements?

[kien]

I'm mostly curious about those running SPS tanks that are NOT using supplements like Zeo or UltraLight additives or coral foods like cyclopeze, coral frenzy etc.. This thread isn't meant to debate the merits of any of these additives. Again, just curious to see if anyone is successful without feeding their corals. What I'm wondering I guess is whether or not I am delusion in thinking that I can get away with not feeding my corals and just letting them live off of photosynthesis and fish poop.