They also like lower salinity 1.021-1.023
I target feed like once a week, reef boom and since I started to keep the salinity down with weekly feedings I've had improved growth.
I have to disagree ,IMO Zoanthids like lower alk , I keep one of my tanks at 9-10 dkh (mixed reef sps/lps/zoanthids). I think they like it closer to 7-8 ,that's what my zoanthid soft tanks is running at.