Rise Substrates Grow Slabs are engineered with strict QC processes to guarantee chemical uniformity, proper drainage profiles, and structural integrity. Our slabs are structured using a specific blend of washed coir pith (for water retention) and coir husk chips (for structural porosity and drainage).
Physical & Chemical Properties
These values represent our target tolerances across standard batches. Circumspect parameters ensure optimal root expansion without salt shock or waterlogging:
| Parameter | Target Range / Value | Testing Method / Details |
|---|---|---|
| pH (1:5 dilution) | 5.8 – 6.8 | Deionized Water Extraction |
| EC (Washed) | < 0.5 mS/cm | 1:1.5 Volumetric Method |
| Water Holding Capacity | 60% – 68% | Fully saturated drainage profile |
| Air-Filled Porosity (AFP) | 22% – 28% | Varies depending on chip ratio |
| Moisture Content | < 15% | At time of compressed packaging |
Circumstances Where This Helps
Our grow slabs are specifically optimized for hydroponic greenhouse systems where run-to-waste irrigation is automated. Maintaining a stable AFP ensures that even during peak summer irrigation schedules, roots receive sufficient oxygen, eliminating root rot risks in sensitive vine crops (tomatoes, cucumbers) and soft fruits (strawberries).