About 3 weeks ago when I made the move from my 65 down to a 29 Biocube, I had a crocea left over from parting out my old tank, so I just threw it in the Biocube until I had time to take it to the LFS. Going into week 4 it's still in my Biocube, under stock lighting, and seems to do really well. I'm really curious to see how it does under stock lighting, so I'm going to run with this experiment until I notice a decrease in the clams health. If this happens, I'll take him to my LFS and trade it in.