I have a 48" TEK T-5 light fixture with 6 54 watt High out put bulbs over my 75 gallon reef, I was wondering what I could have that would do awsome on the sand. Are there any clams that will actually burry there bodiesand just expose there mantal? I want to get a clam, but I had a crocea that was doing awsome for a few weeks and then it kicked the bucket, I have all my parameters where they need to be, and I cant figure out for the life of me why it died. Its frustrating.