My NGT was the most difficult to get onto pellets. But what I did was feed it a worm or two every day until it got comfortable coming out and begging. Then I would soak sinking carnivore pellets in krill juice. Just enough so the pellets become a thick paste. I rolled a bit of the paste between my fingers to shape the paste into a "worm" and drop it into the tank. Initially the dat hesitated, but after a few attempts he took the worm shaped pellet. Everyday I fed him I'd make the paste less like a worm and more like a pellet. After two weeks it was eating pellets fine. And now it won't eat anything but massivore...
