Sorry late reply, maybe you have a solution of your question, but maybe someone still need answers to your questions
very simple
microworm is a worm originating from the soil, because
You must be fishing from the land too
prepare the potatoes, put a hole about 1-2 cm
buried in the soil or that there are a lot of rotten wood
about a week
after that, wash the potatoes on it while filtered with a soft cloth
microworm then forwarded to the container that has been filled with a mixture of flour + yeast bread, give a little water, stir
possible in the first experiment, the container will still be many micro-organisms other than microworm
This experiment does not always work well, but it's a price to pay, try again and try again
that's it .., good luck!