So i just got a dogface puffer yesterday and got some San Francisco bay krill and then read that they will need more than just that. So today i bought 4 muscles and 4 jumbo shrimp. I got home and threw in the muscle on a half shell and he ate most of it and then i gave him some krill and he also ate most of that. Question is how long should i leave the half shell in there for? He keeps coming back to nibble on it so thats why i ask. Also what should i feed him each day?