One Blasto Head Shrinking, The Other Thriving?

[Reefer37]

I'm not sure what's going on with my blasto, one head is shrinking while the other looks happy as can be. I've never had an issue with these guys in my tank, I've found them to be honestly some of the happiest and hardiest corals in my tank.

Any ideas why only one head might be shrinking?

 

[HuduVudu]

Do you feed them?

 

[Reefer37]

Do you feed them?

Rod's food about twice a week, Reef roids weekly and Red Sea A+B Aminos once a week.

 

[HuduVudu]

Do you put food on them? Do they close over the food and eat it?