Products Description
Tenlead seedling grow mediums are made of phenolic foam, Tenlead has professional production process to make the mediums have very good water absorption and water retention functions. The higher drainage design helps to maintain an ideal air to water balance, even under heavy watering conditions. The enhanced drainage also keeps the top of the cube drier, helping to minimize algae growth.
| Material | phenolic foam |
| Density | 11-20kg/m³ 40-50kg/m³ |
| Pore space | 90-98% |
| PH value | 6.5-7.4 |
| Electrical conductivity(ds/m, 20C degrees) | 0.55 |
| Shrinkage | < 0.01% |
| Compressive strength(kpa) | 20-31 |
| Fully available water(%vol) | 50-61% |
| Water retention time(h) | 72-144 |
| Water retention capacity(%vol) | 50-91% |
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