Products Description
Stone Rockwool TP40 Grow Cube: Ideal for Cannabis Cloning & Early Propagation
The Stone Rockwool TP40 Plug is specifically engineered for seedling cultivation and cutting propagation and designed with gray light-shade protective film, serving as a critical pre-transplant stage before "blocking on" to larger growing blocks.
It provides ample space for root system expansion—supporting robust early root development—and delivers exceptional performance in both practicality and results. These advantages make it the most popular clone plug choice for cannabis growers, ensuring a reliable foundation for healthy, vigorous plant growth from the start.
| Model | Size(mm) | Size(inch) | Pre-hole size(mm) | Quantity per carton(pieces) |
| TP40 | 40x40x40 | 1.5"x1.5"x1.5" | 3x15,round | 2250 |
| TP40-tray | 40x40x40 | 1.5"x1.5"x1.5" | 3x15,round | 1932 |
Parameter
pH<7.5
Sink time<10s
Organic matter content <1.5%
Toxic & Harmful Heavy Metals Content: Not detectable
Meet GMP Hygiene requirements (Bioburden test):No microorganisms
Application
JMK agricultural rockwool plug boasts exceptional versatility, making it an ideal choice for cannabis cloning. When used for cannabis cuttings, it promotes rapid rooting and ensures uniform stem development—providing a reliable foundation for healthy seedling growth in professional cultivation scenarios.
Usage Tips:
1. You need pre-soak them before use.
2. Adjust nutrient pH of 5.5-6.5 for cannabis cloning.
3. Rockwool plugs can be reused or recycled for another planting. Plant leafy vegetables（ shallow-rooted plants）after disinfection. Or cut it and mix it with the soil to improve the air permeability of the soil.
4.It is suggested to wear a pair of gloves when using.
