Pargro Slab
Best rockwool slabs for professional hydroponic vegetable and flower growers.
These rockwool slabs are the gold standard for growers who value predictability over experimentation. By standardizing your irrigation and root zone environment, they eliminate the guesswork of soil-based cultivation. You sacrifice the organic complexity of traditional dirt, but you gain unmatched consistency and control over every harvest.
$99.14
at
Simply Hydroponics (SimplyHydro)
Who it's for
- Facility managers scaling large, uniform crop production
- Commercial growers needing rapid, efficient transplanting workflows
- Hydroponic gardeners prioritizing healthy, oxygen-rich root systems
Who should skip it
- Eco-conscious growers avoiding non-biodegradable waste materials
- Beginners seeking a plug-and-play, zero-prep growing medium
- Gardeners sensitive to airborne dust or skin irritants
Performance breakdown
Root Development
Vertical fiber orientation encourages rapid, uniform root penetration throughout the slab.
Hydration Control
Hydrophilic technology makes managing moisture levels and EC refreshment remarkably intuitive.
Ease of Setup
Pre-cut holes eliminate prep time, allowing for immediate, hassle-free planting.
Aeration Efficiency
High-porosity structure maintains excellent oxygen exchange for vigorous plant respiration.
Consistency
Uniform slab density ensures predictable growth rates across your entire crop.
Durability
Robust rockwool composition holds its shape well throughout extended growing cycles.
Key Specs
Dimensions
36" x 6" x 3"
Quantity
Case of 12 Slabs
Hole Configuration
3 pre-cut 4x4 holes
Material
Rockwool
Fiber Orientation
Vertical
Volume
4.5 cubic feet
Soil Type
Potting Mix
PH Level
0.0
Drainage Level
Moderate Draining
Moisture Retention Level
Medium
Know before you buy
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