I am toying with a clam for my new system, but i cant remember which species of clam is regarded "" beginner safe "" well beginner when it comes to keeping clams. I understand that they need a mature tank and ALK , calcium etc all kept stable . and i know some clams like being on the sand bed , where as others like being on rock work so they can put there foot down. i would like a Maxima but i know these are not seen as easy for those new to clams. but for the life of me i cant remember the other species lol.