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Bottom Tier (Leachate Collection):
- This tier does not get bedding, food scraps, or worms intentionally.
- Its sole purpose is to collect leachate ("worm tea") from the upper composting trays.
- Do not add newspaper, cardboard, or soil here.
- Optional: Add twigs, mesh, or screen to help any wandering worms climb back up.
- Ensure the spigot is open occasionally or place a container underneath to collect liquid.
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Middle Tier (Initial Worm Habitat):
- Line the bottom with 2–3 layers of damp newspaper, extending up the sides.
- Add moist bedding:
- Shredded newspaper and cardboard (avoid glossy or colored materials).
- Optional: Mix in a handful of soil or aged compost for microbial diversity.
- Introduce your 750 worms evenly across the bedding (about 187 worms per composter).
- Cover with a worm blanket or additional damp newspaper to retain moisture.
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Top Tier:
- Leave empty for now. It will be added once the middle tier is nearing capacity.
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Initial Feeding:
- Start with ½ to 1 cup of chopped food scraps every few days per composter.
- Monitor consumption; only add more when previous food is mostly gone.
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Suitable Foods:
- Vegetable scraps, fruit peels (in moderation), coffee grounds, crushed eggshells, tea bags (without staples).
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Foods to Avoid:
- Meat, dairy, oily foods, citrus, onions, garlic, spicy foods.
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Feeding Tips:
- Always bury food scraps under the bedding to deter pests.
- Rotate feeding spots to encourage even worm distribution.
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Moisture:
- Bedding should feel like a wrung-out sponge.
- If too wet: Add dry shredded paper or cardboard.
- If too dry: Mist with water.
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Temperature:
- Ideal range: 55°F to 77°F (13°C to 25°C).
- Place the bin in a shaded, well-ventilated area, away from direct sunlight.
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Once the middle tier is about 70% full:
- Prepare the next tier with moist bedding similar to the initial setup.
- Add a small amount of food to attract worms upward.
- Place the new tier on top, ensuring the bedding from the lower tier contacts the bottom of the new tier to allow worm migration.
- Cover with a worm blanket or damp newspaper.
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Repeat this process as each tier fills.
- When the bottom-most composting tier (not the leachate tray) is full and worms have migrated upward:
- Remove the tier and place it under bright light; worms will burrow away from the light.
- Scrape off the top layer of castings; repeat until most worms are separated.
- Alternatively, use a bait method:
- Place a mesh bag with attractive food (e.g., melon) in the bin.
- After 24–48 hours, remove the bag containing worms and relocate them.
- Use the harvested castings in your garden or potted plants.
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Grit Alternatives:
- Crushed eggshells: Rinse, dry, and grind into a powder.
- Oyster shell flour: Provides calcium and helps buffer pH.
- Sand: Use in small amounts; ensure it's clean and free from contaminants.
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Application:
- Sprinkle a small amount (~1 tablespoon) into each composter every few weeks to aid digestion and maintain pH balance.
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Regular Checks:
- Monitor moisture levels, temperature, and food consumption in each composter.
- Ensure no foul odors; a healthy bin should smell earthy.
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Leachate Management:
- Drain the bottom tray regularly to prevent anaerobic conditions.
- Use leachate cautiously; dilute with water (10:1 ratio) before applying to non-edible plants.
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Pest Control:
- Avoid overfeeding and always bury food scraps to deter fruit flies and other pests.
Happy composting! Your worms will thrive with this setup, turning your kitchen scraps into nutrient-rich castings for your garden.