Who has successfully kept to silvers together? Ive recently purchased 2 and one seems to be picking on the other. Ive had them for about 2 1/2 weeks and felt necessary to separate them. One has absorbed his sack while the other hasnt, which is another reason for separating them for feeding. Im thinking of putting them back together when the other has absorbed his sack. Anyone have luck raising 2 together at this stage?