Cultilene 4" Rockwool Grow Cubes
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The Cultilene 4-inch rockwool grow cubes with small holes are a professional-grade hydroponic growing medium designed for seedlings, cuttings, and established plants in soilless systems. Made from spun volcanic rock fibers, these cubes offer excellent water retention, aeration, and root support, making them a reliable choice for indoor and greenhouse growers. The pack of 10 provides a practical quantity for hobbyists or those scaling up their hydroponic setups.
Key Features & Specs
| Size | 4-inch cubes with small hole (28/35 mm opening) suitable for seedlings and cuttings |
|---|---|
| Quantity | Pack of 10 cubes per order |
| Material | Spun volcanic basalt rock wool fibers bonded into a stable, porous structure |
| Drainage | Engineered for optimal air-to-water ratio, promoting healthy root zone oxygen levels |
| Compatibility | Works with most hydroponic and aeroponic systems including NFT, DWC, and drip irrigation |
| pH Level | Pre-soaking recommended to adjust pH to 5.5-6.5 before use with plants |
| Reusability | Single-use growing medium; sterile and disease-free straight from packaging |
Best for: Hydroponic enthusiasts and small-scale greenhouse growers who want a reliable, professional-grade growing medium for propagating cuttings or transplanting seedlings into larger systems.