i would feed my zoanthid tank and it did quite well i had around 80 different colonys and i rarely had any melt away unless they were new or unhealthy to begin with if anythiong i took alot of zoas that didnt look well and turned them around.my zoa tank had low nitrates and phosphates and water changes every week.i didnt shoot for a low nutrient system and they seemed to like it , also they were pretty much the only corals in there.alot of them sat directly under a 250w halide,some liked it better in the shade took alot of moving to figure out what grew where once it looked good i left it alone and never touched it afterwards.i ran no carbon,didnt dip any of them.had a low bioload of 2 fish.wasnt dosing anything as well. i believe feeding them and changing water is where my success came from.zoas didnt do well in my 180 or my 11o mixed reefs so i started a small 33g just for zoas it was grown out completely with in 2 yrs.
