i was just looking at your day 6 video and it looks like you have some aptasia. Its those brown polyps with the long fingers on it. You really should try to get rid of them before they spread alot. When you water parameters are looking good try to get a peppermint shrimp. They will eat them well most of the time. And whatever he doesnt get you can use aptaisa X. Im probably spelling the names wrong sry cant spell to save my life haha.