the same method stated in the first page... just keep on trying, try splashing the krill onto the water(might help simulate a feeder dropping in). just make sure you have them at the top of the tank waiting to be feed, and they know that your are the one feeding them.
I managed to feed my peacocks immediately from beginning with Hikari food. They didn't accept any dry food than Hikari. Even frozen fresh bites of fish was not accepted. What's funny is that they favourite Hikari is big algae wafer sinking pellet Now they are already 35cm and eat most of the pellets I give em and prawns. Also some loaches has gone but not by purpose