The EHEIM Twin automatic fish feeder is a wonderful auger/screw based feeder that ensures consistency. However the augers that came with the feeder do not work well with smaller pallet sizes. 0.5mm micro pallet causes the augers to jam.
This video demonstrate a custom designed the auger that is capable of delivering extremely small quantity of micro-size pallet and even grounded pallets, at a consistent and reliable rate.
EHEIM Twin Automatic Feeder: http://amzn.to/2dE4SKT
Recommended to use with feeding station: http://amzn.to/2dQIE6L
*** PLEASE NOTE: a small amount of trimming is required (See picture) inside the lid, use a snipper to cut away about 2-3 mm of the straight corner inside the lid. It would not affect the performance of the lid, but it will make this custom auger fit better inside the lid without making structural compromises.