Nana reefer I think you misread what baby Ray said. They have 4X24 watt T5 fixture and the tank is only 18 inches deep. I think that should be suffice and if not they can always move it closer to the light source.IMO 2x24w is no where near enough light for any Clam. Especially one on the sand bed. So the answer to your question is NO! Please don't even attempt it. The Clam will definitely die.