I recently bought a short tenacle plate coral. This coral hasn't really inflated yet however for the first few days the polyps did extend and it accepted food. It is now losing color (bleaching?) and I'm not sure if this is a really bad sign or if it's just acclimating going through a change. The coral is located on the bottom of my tank with medium- low flow. Tank stats are ammonia-0, nitrite-0, nitrate-0, alk-2.5, calcium-480, salinity-1.025. Any help with this or these corals would be great!