So my local Petco lost all their saltwater guys and the systems where just going downhill fast. Well they finally hired back one of them and by that time they had lost all their coral. Well when he was fixing up one system he found a rock covered in zoa's that was hidden under other rocks so it was getting no light at all. The zoa's where alive but totally lost all color. He just gave them to me for free since he had already marked all corals and dead so now I have some mystery zoa's, lol. I'm just interested in seeing what colors they end up. The rock has about 20 heads.