I love Zoa's or used to since I gave up after a few years.
Tried like 2 dozen times. Singles, doubles for better success, rocks with a few.
They are suppose to be easy. Other stuff does well, like LPS, Shrooms, Leathers.
But after many many tries, the Zoa's always just vanish on me over time.
It could be my Main Tank has these Invasive Palys, so a good spot for Zoa becomes a good spot for a Taller Paly.
I got a small 35 G Tank that I have just rocks. Safe from those Nasty Palys and might start again.