Bulk Rockwool Cubes | Cultiwool Donut Ring
5.0 / 5.0 (1 reviews)Shop Cultiwool rockwool grow blocks with a donut-ring planting chamber. Compare available case and pallet sizes for commercial hydroponic grows.
$3.17 / unit · 48 cubes in this pack
Specs that do the talking.
- Product dimensions
- 6 × 6 × 6 in
- Total units in pack
- 48 cubes
- Material
- Stone wool (rockwool) with donut-ring planting hole and bottom drain grooves
- Supply format
- Case or pallet
- Compatible systems
- Drip irrigation, Ebb and flow irrigation, Run-to-waste irrigation
Product details
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
- Pre-condition: Soak cubes in pH-adjusted water (5.5–5.8) until evenly saturated.
- Insert propagation plug: Place seedlings or clones into the donut-ring chamber for uniform hydration.
- Irrigate consistently: Run cycles with 10–20% runoff to maintain balance and avoid salt buildup.
- 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.