Originally posted by vaz
I dont feed it anything.
These animals need food, lots and lots of food. You're starving it, they don't eat phyto.
I suggest meaty pieces of marine origin. This can include squid, Lancefish, shrimp, etc. Each animal is unique so you may need to experiment to determine its preferences. I recommend feeding it every other day for a while if it will eat that often. You will eventually get a feel for how much and how often.