Just make sure you feed him once a week I use pacific prawns I buy from the Stevenson docks once or twice a year. but you can use any raw shrimp with or without head if it has the head it will contain more nutrients. I think as long as it eats and gets good light it will be OK, it may change to a white color but if it stays that way then some thing is wrong it has lost its photosynthetic cells. This is a bad thing get some zoo plankton this will help as the zoathoid cells in the plankton will be Incorporated into the nems system.

Bill