150w MH will enough light for any clam, but I would pass on the derasa and squamosa as they get way too big for a 30g aquarium. A crocea or maxima would be good choices and from my experience the crocea is fairly hardy mine has been through many trials over the last 3 years from high nitrates, high salinity, low salinity, moved tank 100 miles, 50deg temps, 90deg temps, and aiptasia. Not sure if I was just lucky but I think they must be fairly hardy to not succumb to at least one of these situations. Might have to set a crocea higher in the tank, you can start it on the bottom and if you notice the coloration starting to fade or getting more brown you will need to move it higher in the tank.
Clams larger than aprx 3" can maintain themselves with only photosynthesis and do not need to be fed and do not need nitrates in the water.