I want to get a clam. The LFS I always go to have a couple nice ones. They have had them for a couple weeks now and look healthy. Right now they are mid-way up a 55 gallon with t-5s. I have a 28 gallon EcoSytem Mini with 150w MH. Do I place the clam on the sand bed or higher up in my tank? Also is it better for a clam to be in the sand or on a rock? I have heard that in the sand bristle worms will climb in to the bottom of it and eat it from the inside out. I am not sure if I have any bristle worms. I use to but since I put a arrow crab in the tank I have not seen any. Don't know if arrow crabs eat them but I have not seen any lately. Back to the clam questions. I have also heard that you need to "burb" the clam when you get it my rolling it over a couple times in the tank to get any air inside it out. Is this true? Thanks for the help. Hopefully I can pick the clam up Sat or Sun.