Josh make sure to get yourself extruded type of flour. I thought all instant flour should be extruded by default, but it turns out they are not, or at least not to the same extent. Extruded one is important as the fats in the flour oxidize quickly under normal circumstances, but extruded stuff will not, because of the starch covering the particles during the proces and so protecting them.
Also set your cultures according to the picture. These are white worms, but the principle works for both. There is a plastic net covered by a piece of glass. To get clear worms, you only put the food on the glass, so that they have to leave the substrate to feed. This way, you are able to collect worms only + they are encapsulated with their food. You will still need to rinse them, but no cocopeat particles anymore…