Hydrofarm
Char Coir Coco Cube RHP Certified Coco Coir
Best coco coir for growers seeking precise nutrient and pH control.
Elevate your growing experience with the Char Coir Coco Cube, an RHP Certified Coco Coir medium perfect for nurturing plants from seed or clone through flowering. Each 2.25L cube is buffered and stabilized to maintain an optimal pH of 6.0-6.5, ensuring excellent nutrient absorption. Its very low EC (under 0.6) provides superior feeding control, while the aerated fabric bag promotes enhanced growth and efficient dry-down. Free from pathogens and stabilized for consistent performance, this coco coir is designed for optimal plant development.
$141.95
Owner Satisfaction
4.5
/ 5
Category Rank
714
/ 1179
#714 in Soil
Price vs Category Average
+180%
Above average
Volume per cube
2.25
/ Liters
Who it's for
- Gardeners prioritizing plant safety and consistent, pathogen-free growing conditions
- Botanists seeking optimal root health and rapid growth cycles
- Eco-conscious growers looking for sustainable, peat-free planting alternatives
Who should skip it
- Beginners preferring simple, pre-fertilized potting soil mixes
- Impatient gardeners wanting immediate, ready-to-use planting substrates
- Casual hobbyists avoiding complex nutrient management and chemical balancing
Performance breakdown
Nutrient Precision
Low EC levels provide growers with total control over feeding schedules.
Root Aeration
Fabric bag design encourages superior oxygen flow for healthier root systems.
pH Stability
Buffered medium maintains a consistent environment for optimal nutrient uptake.
Moisture Management
Efficient dry-down cycles prevent overwatering and support vigorous plant development.
Quality Assurance
RHP certification guarantees a clean, pathogen-free substrate for every crop.
Lifecycle Versatility
Reliable performance from initial seed starting through the final flowering stage.
Key Specs
Volume per cube
2.25 Liters
Case quantity
32 cubes
Expanded dimensions
6" x 6" x 4"
Electrical Conductivity (EC)
Less than 0.6 dS/m
pH Range
6.0-6.5
Material
100% RHP Certified Coco Coir
Weight (Case)
30 lbs
Packaging
Aerated fabric bag
Features
- Ideal for entire plant lifecycle
- Superior nutrient absorption
- Precise feeding control
- Enhanced growth rates
- Efficient dry-down
- Pathogen-free medium
- Stabilized for consistent pH
- RHP Certified for quality
What customers say
Customers consistently praise the Char Coir Coco Cubes for exceptional quality and reliability. Growers appreciate the RHP certification, noting the low salt content and consistent structure which prevents common growing issues. The cubes hydrate quickly and maintain excellent aeration, making them incredibly easy to use even for novice gardeners. This dependable performance establishes them as a premium, trustworthy choice for serious cultivation.
Know before you buy
RHP certification is a quality mark that ensures the coco coir meets strict standards for physical and chemical properties, including being free of pathogens and weeds. It guarantees a consistent, high-quality growing medium that is safe for your plants.
No, the Char Coir cubes are pre-buffered and stabilized to maintain a pH range of 6.0-6.5. This allows for immediate use and optimal nutrient uptake right out of the bag.
Yes, these cubes are designed to support your plants from the initial seed or clone stage all the way through to the flowering phase.
The fabric bag promotes better airflow to the root zone, which encourages healthier root development and allows for more efficient dry-down cycles compared to plastic containers.
With an electrical conductivity (EC) of less than 0.6, this medium provides a clean slate for your nutrient regimen. This gives you superior control over exactly what your plants are being fed without interference from high salt levels.
While the coco coir is a natural, high-quality medium, it is not certified organic. If your garden requires strictly organic-certified inputs, you may want to consider other options.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$142