Ok so I am working on my rebuild and upgrade. I want to make a spot for a couple clams since I lost my last to in a crash. Someone told me the J Sprung posted pics or an article of Corcea clams in like 5" of water. Is that true? Do they really like that much light? I was thinking maybe like 1/2 way up the rocks but not higher then that. They will be under 6*39 watts of T5s. The tank will be 24" deep. If they do like that much light are there other clams that like that much light?