Coco Coir Brick
Best sustainable growing medium for container gardeners and hydroponic enthusiasts.
This is the gold standard for anyone tired of heavy, inconsistent potting mixes. It offers unmatched water retention and a perfect, airy texture for seed starting, though you will have to put in the minor effort of rehydrating the bricks before you can start planting.
$11.99
at
SeedTime (retailer)
Who it's for
- Gardeners seeking consistent moisture and healthy root development
- Urban growers with limited storage space for supplies
- Eco-conscious growers preferring a sustainable, neutral growing base
Who should skip it
- Beginners intimidated by managing complex nutrient feeding schedules
- Impatient gardeners needing immediate soil for quick planting
- Precision growers concerned about potential mineral salt contamination
Performance breakdown
Water Retention
Superior moisture absorption keeps root zones hydrated for extended periods.
Purity Standards
Pre-rinsed and buffered composition minimizes risk of salt toxicity.
Aeration Quality
Optimal pore space promotes healthy root respiration and prevents compaction.
Handling Convenience
Compact brick format simplifies storage and transport for urban gardeners.
Versatility
Adapts seamlessly to hydroponic systems, seed starting, or soil amendments.
pH Stability
Consistent pH range supports nutrient uptake across diverse plant varieties.
Key Specs
pH
5.4 - 6.8
Electrical conductivity (uS/cm) max
250
Cationic exchange capacity (meq/100g)
60 - 130
Total Organic Matter (w/w, dry basis %)
94- 98
Water holding capacity (of dry weight)
8 - 9 times
Air filled porosity (v/v, %)
10 - 12
Total pore space (v/v, %)
94 - 96
Dimensions
Approx. 5 x 10 x 20cm (2”x 4” x 8”)
Weight per brick
1.37 lbs (625 grams)
Know before you buy
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Ask Metto anything about the Coco Coir Brick before you decide.
