Why all the back and forth gentlemen, I think the title says best food for sps in a mixed reef...correct... Many do rely solely on fish waste as a coral food and have great success, especially with a mature and diverse reef capable of snail, shrimp, and micro invert spawings, which I find one of the best sources of coral food. The idea of supplemental foods for coral feeding is attractive, especially when you see a response from corals displaying full PE 24/7...
Allmost-you are a zeo user correct? It is like coral vitalizer and it's impacts on PE with sps corals, which is listed as a food, whether you use it or not, unsure... I have used zeovit and saw major impacts on using CV as an alternative food for corals, just mentioning...
Personally, I have dropped full on zeovit and juse NP Biopellets as C-Source along side of GFO... I have 10 fish in a 70 gallon tank that eat constantly, so food for corals is definitely there. I have also added in a fuge with macros and NO predators whatsoever, this tank has snails, micro stars, pods and other harmless creatures. I like your idea Allmost of having significant food sources already available, I think with a fuge this allows those spawnings of verts to feed the tank, which ultimately will remove the need for supplemental feedings. Without knowing ones setup, it is hard to say that they fish waste is enough, they might employ a heavily powered skimmer, use filter socks to trap foods, and have a somewhat sterile type environment with ULNs which would suggest use of coral foods including, aminos, rotifers, zooplankton, etc... This is exactly why I have re-designed my system and gravitated away from full out zeovit. I still use 8-10 of their supplements, but very sparingly now, I usually wait several days to observe their impacts. My goal is for a constant supply chain of food for all animals to be happy, this is MY goal, and I certainly argue with anothers approach, while it might not be my philosophy, that does not mean it does not work...
GL gentlemen, why don't you guys take your differences to PM and help the OP to get on track to a better tank...