Product Description:
Hydroponic Square Cubes made of phenolic foam have good chemical stability, non-toxic and non-polluting, is an important planting substrate for modern agricultural production. 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. At the same time, they have anti-aging properties and can be immersed in nutrient solution for a long time without deformation or aging.
| 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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