- Starter culture of grindal worms
- A plastic container with a lid (eg Chinese food container, plastic tub)
- Peat (soaked and rinsed) or quality seed raising mix for substrate
- A sheet of thin glass, smaller than the surface area of the culture
- A marble or suction cup (to be used as a handle to help lift the sheet of glass)
- High quality kitten kibble
- Spray bottle
- A handful of shell grit*
- A handful of vermiculite*
Optional step: Mix the vermiculite and shell grit with the pet/seed raising mix (this helps prevent the substrate becoming too acidic and also improves drainage).
Place the soaked peat or seed raising mix into the plastic container. Ensure that you have adequate clearance between the substrate and the lid.
Add some water so that the substrate is moist but not wet.
Add the worms from the starter culture to the centre of the substrate.
Put a piece of kibble on top of the substrate, in the vicinity of where you added the worms. Mist the kibble and the surface of the substrate.
Stick the suction cup on top of the glass/stick the marble on top of the glass with glue or silicone.
Mist the surface of the glass and place the glass over the kibble/substrate.
Place a lid on the culture then leave the culture alone until you observe worms under the glass consuming the kibble.
When one piece of kibble has been mostly consumed, add 2 more pieces of kibble.
When worms begin to swarm on the glass surface, you can start to harvest them off the glass to feed to your fish.
Ensure that you monitor the amount of kibble in the culture. Without food, the worms will starve.
You can add more kibble each time it is consumed, as the worm population grows. Only add as much food as the worms can consume in 24 hours, or it will grow fungus.
* optional ingredients
Still have more questions about Grindal Worms? Need more information? Swim on over to the forum!