nwyk153, norman19, sheltiejazz, beelim : yea sure bros, i will seek ur advices, varying their diet.
In fact i am in the midst of introducing new stuff as part of their diet, i've been feeding 'em with pellet, (frozen fd, seaweed once in awhile).
vt_snowman87: haa thnx bro for ur offer, will pm u if i really need it! =)