Took a pic of some corals that appeared after a few months. Pics aren't the best, but my camera won't focus that close. Appreciate any help. Top coral, now about 15 polyps. Pink radial pattern, fairly long tentacles compared to zoas. Bottom coral, encrusting. Greenish. Lots of small polyps. About every 4-6 weeks, polyps withdraw, A "skin" forms and sloughs off a day later, and polyps re-appear.