Step-by-step
Step 1: Mix culture mediumIn container: mix 1 cup instant oats with enough water to make a thick paste (oatmeal consistency). Add 1/4 teaspoon active dry yeast. Stir.
Step 2: InoculateDrop a portion of the starter culture onto the medium. Spread evenly. Don't mix in - microworms migrate to surface.
Step 3: Cover looselyPunch 4-6 small holes in the lid for ventilation. NOT airtight - microworms need oxygen.
Step 4: Wait 7-10 daysWorms multiply on the surface + climb the container walls when culture matures.
Step 5: Harvest from wallsWipe walls with a toothpick or finger. Microworms accumulate as a paste. Mix with a few drops of water; offer to fry via dropper.
Step 6: Rotate culturesEach culture lasts 2-3 weeks. Start a new culture every week from existing one. Always have 2-3 active cultures.
FAQ
How long do microworms live?
Individual microworms 30 days. Cultures last 2-3 weeks before going sour (smelly + unproductive). Always rotate fresh cultures.
Are microworms or vinegar eels better for fry?
Microworms are slightly larger (1-2mm) and more nutritious. Vinegar eels are tinier (0.5-1mm) and last longer in water. Use both.
Can adult fish eat microworms?
Yes - any fish that takes flake will eat microworms. Treat for adults, staple for fry.