potters are beautiful angels. We had one in our old tank that was mostly a good citizen. We lost it in a tank crash unfortunately
. Up until the loss it only ever picked on our porites (on a christmas tree worm rock), never saw it bothering our other SPS, clams, zoas or LPS/Zoas
We almost added another one a couple of months ago, but we already have a well established golden angel in our current tank and the two would likely fight (both being pygmys). And we read that the potters are of the more agressive pygmy angels, so we decided not to risk our Golden.