Precision Root-Zone Control
Uniform fiber density supports irrigation response to crop steering, helping growers maintain stable WC (Water Content) and EC levels throughout the entire cycle.
Professional Growing Media
Rock Wool Growing Slab RVP-75
Model: RVP-75The Grofine RVP-75 stone wool growing slab is engineered for commercial cannabis cultivation, offering the ideal balance of water retention and aeration. With a robust structure comparable to industry-leading substrates, it supports root development during the crucial flowering stage, supporting crop steering and management.
Key Product Benefits
Optimized Irrigation Efficiency
Designed for effective drainage and controlled dry-backs, allowing you to easily adapt the slab to your standard drip fertigation strategies.
Expansive Root Capacity
Provides a highly oxygenated, resilient physical environment that encourages root development and vigorous plant development.
Structural Integrity for Long Cycles
Maintains its shape and volume while supporting heavy cannabis canopies through the demanding flowering phase.
Product Specifications
- Product
- Rock Wool Growing Slab RVP-75
- Pre-cut hole
- 1. No pre‑cut hole
2. Standard:0-4 pcs holes,
usual hole size:75 mm/100 mm
3. Custom hole size & quantity - Film
- With white film wrapped
- Application
- Mainly designed for cannabis cultivation.
- Compatibility
- Designed for use with compatible Growing Blocks
- Safety
- Microbe-free, pathogen-free, non-toxic
Brands: Multiple options available.
Standard Configurations
| Model | Available Widths（in/mm） | Available Widths（in/mm | Fixed Height（in/mm） | Holes Per Slab |
|---|---|---|---|---|
| A | 36in/900mm | 6/8 in (150/ 200mm) | 3 in (75mm) | 0‑4 holes per slab |
| B | 40 in/1000mm | 6/8 in (150/ 200mm) | 3 in (75mm) | 0‑4 holes per slab |
| C | 43.3in/1100mm | 6/8 in (150/ 200mm) | 3 in (75mm) | 0‑4 holes per slab |
| D | 47.2in/1200mm | 6/8 in (150/ 200mm) | 3 in (75mm) | 0‑4 holes per slab |
| custom | custom | custom | custom | custom |
Other sizes, block opening dimensions and layouts are available upon request. Final standard SKU data will be confirmed by Grofine.
Usage & System Compatibility
Commercial Growing Systems
Suited for modern indoor farming, vertical cultivation racks, and standard commercial greenhouse block-on-slab setups.
Drip Irrigation & Fertigation
Fully compatible with advanced precision drip irrigation systems, integrating with conventional P1, P2, and P3 watering phases.
Block Integration
Engineered to establish block-to-slab contact when paired with standard cannabis rock wool growing blocks for a unified root-zone.
Related Products
Rock Wool Propagation Plug T36
Optimized fiber balances water & air for early root growth. Standard T-shape fits propagation trays and rock wool blocks for crop steering.
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Cannabis Rock Wool Growing Block 100S
Delivers precise root-zone water and oxygen control.Optimized air-filled porosity for healthy root growth.Enables accurate EC/pH management for high-yield cannabis cultivation
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Cannabis Rock Wool Growing Block 15P
Provides excellent rootzone water-oxygen balance for high-yield cannabis. Usable standalone or stacked on grow slabs for precise crop steering and hydroponic nutrient uptake.
View ProductNeed a High-Performance Substrate for Commercial Growing? 🍃
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