Hydrofarm
Char Coir Coco Cube RHP Certified Coco Coir, 2.25 L, case of 32
Best clean growing medium for consistent plant propagation.
The Char Coir Coco Cube is an RHP Certified coco coir growing medium designed for planting clones or seeds through both vegetative and flowering stages. Each cube offers a 2.25-liter volume and is buffered and stabilized for a proper pH range of 6.0-6.5. Its high cation exchange capacity ensures optimal nutrient uptake, while the RHP certification guarantees it is free of pathogens and has a very low EC, less than 0.6. The aerated fabric bag enhances growth rate and dry-down, making it an excellent alternative to rockwool blocks.
$141.95
Owner Satisfaction
4.5
/ 5
Category Rank
865
/ 1179
#865 in Soil
Price vs Category Average
+180%
Above average
Volume
2.25
/ Liter
Who it's for
- Growers prioritizing sterile, high-quality media for consistent, healthy plant development.
- Cultivators seeking easy-to-manage, structured media for efficient plant establishment.
- Gardeners aiming for vigorous root growth and efficient nutrient uptake.
Who should skip it
- Novice growers or those preferring less hands-on nutrient management.
- Users seeking a completely ready-to-use medium without any pre-treatment steps.
- Gardeners desiring an immediately ready-to-use growing medium.
Key Specs
Volume
2.25 Liter
Expanded measurements
6 x 6 x 4 inches
100% RHP Certified Coco Coir
Buffered
EC less than 0.6
Pathogen-free
pH range 6.0-6.5
High cation exchange capacity
Features
- RHP Certified Coco Coir
- Buffered and Stabilized pH
- High Cation Exchange Capacity
- Pathogen-Free
- Low EC
- Enhanced Growth Rate
What customers say
Customers consistently praise the high quality and purity of these coco coir cubes. Many find them exceptionally clean and free from debris, which is crucial for healthy plant growth. The product's consistent expansion and ease of hydration are frequently highlighted, making it simple for growers to prepare and use. Users appreciate the reliable performance, leading to successful propagation and cultivation. The bulk packaging also offers good value for those with larger growing needs. This reliable medium supports robust plant development.
Know before you buy
RHP certification is a quality mark that ensures the coco coir meets strict standards for physical and chemical properties. It guarantees the medium is free of pathogens and weeds, and that it maintains a consistent, low electrical conductivity (EC) for reliable plant health.
No, these cubes arrive pre-buffered and stabilized. They are ready to use with a consistent pH range of 6.0–6.5, so you can plant your seeds or clones immediately without additional preparation.
These cubes offer a more sustainable, organic alternative to rockwool. The aerated fabric bag promotes better root oxygenation and faster dry-down times, which can lead to more vigorous growth throughout the vegetative and flowering stages.
High cation exchange capacity (CEC) allows the coco coir to effectively hold onto essential nutrients and release them to your plants as needed. This helps prevent nutrient lockout and ensures your plants have steady access to the minerals required for healthy development.
Yes, the Char Coir Coco Cubes are designed to support plants from the initial clone or seed stage all the way through to the final flowering phase. Their structure and nutrient-holding capacity are well-suited for long-term growth.
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$142