Maybe your is lucky and maybe it was stretching out for light all the time and only you din notice it
Boltthrower, clam need very strong lighting and in fact clam 4inches and above depend almost solely on light for survival....... Thus only MH or many tubes of t5s will only be able to keep clams happily...... Therefore the light you mention is not enoyugh.......
Malaysiaboleh, try not to give ppl wrong info and encourage them to do the wrong things. if their things die, fault will only be from you
Anyway PEACE