i took a dendro that had 1 head on it and it was almost dead..i put it in a cave with med-high flow and gave the it 5ml of cyclopezze and water solution every day..i now have 3 full heads and 3 babies on this thing..until it is back looking good dont not feed it large meaty foods like mysis..it will take it but will take to long to digest and spoil inside them..it is normal for them to stay closed up for up to a week after a good feeding of large foods..thats why mine only get cyclopezze or coral frenzy..they stay out all the time..i do feed 1 mysis shrimp as a treat about once a month but i cut it in half..
Rick