Bulk Rockwool Cubes | Cultiwool Donut Ring

Designed for commercial farms and hydroponic facilities, Cultiwool Rockwool Grow Cubes with Donut Ring deliver reliable rooting, precise irrigation, and consistent performance in bulk. These professional-grade cubes eliminate dry cores, improve drainage, and support predictable crop cycles at scale.

Why Choose Bulk Rockwool Cubes

• Even irrigation: Donut-ring planting hole distributes drip flow evenly to prevent dry centers or oversaturation.
• Drainage built in: Bottom grooves move runoff away to reduce standing water and cleanliness issues.
• Stable fiber density: Consistent structure maintains uniform porosity for balanced oxygen and moisture.
• Commercial quality: Manufactured for large-scale farms where every block must perform the same, crop after crop.
• Inert medium: Enables precise EC and pH control—ideal for irrigation steering in controlled environments.

Sizes & Pack Options

• 6″ × 6″ × 6″ (Donut Ring)
  • Case — 48 cubes: Ideal for testing layouts or smaller zones.
  • Pallet — 768 cubes: Bulk supply for commercial programs.
• 6″ × 6″ × 4″ (Donut Ring)
  • Case — 64 cubes: Tighter canopies or quicker dry-back strategies.
  • Pallet — 1280 cubes: High-volume propagation & production.

How to Use

1. Pre-condition: Soak cubes in pH-adjusted water (5.5–5.8) until evenly saturated.
2. Insert propagation plug: Place seedlings or clones into the donut-ring chamber for uniform hydration.
3. Irrigate consistently: Run cycles with 10–20% runoff to maintain balance and avoid salt buildup.
4. Monitor EC & pH: Use the cube’s porosity to fine-tune feeding and optimize plant response.

Specifications

• Material: Stone wool (rockwool)
• Available Sizes: 6″ × 6″ × 6″ (≈150 × 150 × 150 mm); 6″ × 6″ × 4″ (≈150 × 150 × 100 mm)
• Features: Donut-ring planting hole, bottom drain grooves
• Packaging: 6×6×6 — Case 48 / Pallet 768; 6×6×4 — Case 64 / Pallet 1280
• Systems: Compatible with drip irrigation, ebb & flow, and run-to-waste setups
• Applications: Large-scale hydroponics, controlled-environment cultivation, farm propagation

Frequently Asked Questions

What does the donut ring do?
It distributes water evenly through the cube, preventing dry cores and supporting uniform root development.

Do I need special grow tables?
No. These cubes work on standard benches, flood tables, or concrete floors.

Can rockwool cubes be reused?
For commercial farms, reuse isn’t recommended. Single-cycle use supports hygiene, consistency, and disease prevention.

Which size should I pick?
Choose 6″×6″×6″ when you want a larger root zone or longer veg; choose 6″×6″×4″ for tighter canopies or faster dry-back strategies. Both include the donut ring and drain grooves.

Are these suitable for hydroponics?
Yes—rockwool is widely used in hydroponics for its predictable water/air balance and inert profile.