I have seven large tangs, two 3.5 foot Zebra Moray's, a blue spot jaw fish, various gobies, wrasse, and other small fish. My tank is fed a variety of Mysis, reef frenzy, Nori and shrimp from Costco, BRS Chili, cyclops, live phytoplaykton, and New Life Spectrum Flakes (I've had a lot of success with these flakes and highly recommend them) I try and feed mysis because from my research it helps their slime coats and overall health. I use Selcom and garlic concentrate as well. From my experience it's better to feed several times a day. My fish look like they're dying of hunger no matter how much I feed. My Moray Eels go and hide in the rock for a day or two based on how big the shrimp I give them is so they're easier to gauge. I've always had issues with nitrates and have only gotten them under control using vodka. Now that my new system has some age I'm down to only using 14ml a day on a 600 gallon system. How are you guys gauging how much to feed? I guess if you have nutrients under control it's hard to overfeed.