I just buy regular Molles from Petco or Petsmart and place them in a plastic critter cage (with added holes for increased flow) in my sump. In the last 6 months I think I have lost 2 mollies within 24 hours of putting them directly into salt water, not too bad. I usually buy 4 or 6 at a time, then feed my Angler once ever 4 to 5 days.