I purchase a really nice bubble coral last Tuesday and it still hasn't completely opened up. It closes up every night and open about 1/3 of the way each day. All my levels are good and nothing seems to be bothering it. I spot fed it a piece of krill and it took it. It's in good shape no discoloration of damaged bubbles. Anyone know if they normally take a while to open ? It's in a medium-low current with medium-high light.