Compost Activator
Magic Garden Compost Activator 4.5-0-0 is a fast-acting nitrogen-rich compost booster supplied by HD Chemicals. Designed to accelerate the natural breakdown of organic waste, it helps generate heat, encourages microbial activity, and produces rich, nutrient-dense compost faster. Ideal for compost bins, heaps, and garden waste systems.
Key Features
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✔ Nitrogen-rich formula (4.5-0-0) to speed up composting
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✔ Encourages microbial activity and heat generation
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✔ Improves final compost quality and nutrient value
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✔ Easy to apply and fast acting
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✔ Supplied in secure grip seal bags
Uses
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Garden compost bins
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Open compost heaps
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Food and green waste composting
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Leaf litter and grass clippings
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Organic garden waste recycling
📋 Product Details
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Weight: 500g (1 grip seal bag) | 1–4kg (multipack of 1kg grip seal bags)
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Grade: Horticultural Grade
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Form: Powder / Granular
📈 Other Names
Compost Activator Powder, Compost Accelerator, Nitrogen Compost Booster, Fast Compost Starter, Garden Compost Enhancer, Organic Waste Decomposer
🌱 How to Use – Step by Step (Main Uses)
1️⃣ Compost Bins
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Estimate the surface area of compost material
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Apply 135g per m² evenly over the compost
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Mix lightly into the top layer
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Keep compost moist but not waterlogged
2️⃣ Open Compost Heaps
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Measure compost volume and estimate square metres covered
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Multiply total m² by 135g to calculate required amount
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Sprinkle evenly between layers
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Turn heap after application
3️⃣ Grass Clippings & Green Waste
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Apply 135g per m² of material
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Mix thoroughly
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Add water if dry
4️⃣ Food Waste Composting
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Add waste in layers
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Sprinkle compost activator evenly
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Cover with brown material (leaves, cardboard)
5️⃣ Reviving Slow Compost
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Apply 135g per m²
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Turn compost to aerate
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Maintain moisture levels
📏 Dosage Calculation Method:
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Estimate the square metres the compost volume would cover
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Multiply the area by 135g
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Result = total grams required for application
⚠ Safety & Storage
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Wear gloves when handling
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Avoid inhaling dust
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Keep away from children and pets
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Store in a cool, dry place
❓ Frequently Asked Questions (FAQ)
1️⃣ How long does it take to speed up composting?
Heat and activity usually increase within 7–10 days.
2️⃣ Can I use it in closed compost bins?
Yes, it is suitable for both closed bins and open heaps.
3️⃣ Is this product a fertiliser?
It is designed to activate compost, not for direct plant feeding.
4️⃣ How often should I apply it?
Apply when adding large amounts of waste or if compost slows down.
5️⃣ How is the product packaged?
All Magic Garden products are supplied in grip seal bags:
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500g = 1 bag
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1–4kg = multipack of 1kg bags