Products Description
Stone Rockwool Grow Cubes RB150: Versatile Hydroponic Substrate
A top-selling choice in our growing block series.
6" x 6" commercial - grade grow block is a top - choice for hydroponic growers. It's crafted to support larger root systems during the vegetative growth stage of plants.
Constructed from dense stone wool, this cube comes with a precisely cut 40 mm hole. This hole is perfectly sized to fit most starter plugs, enabling clean and smooth transplants.
When it comes to moisture management, the 6 inch rock wool planting cube excels. It has excellent moisture - holding capacity while also allowing for effective dry - back, which ensures optimal oxygenation for the roots.
| Model | Size(mm) | Size(inch) | Precut-hole size(mm) | Quantity per carton(pieces) |
| RB150S | 150x150x100 | 6"x6"x4" | 40x40,round | 64 |
| RB150M | 150x150x150 | 6"x6"x6" | 40x40,round | 48 |
Parameter
Features: Light-blocking wrapping film
pH<7.5
Sink time<10s
Water absorption rate≧900%
Organic matter content <1.5%
Toxic & Harmful Heavy Metals Content: Not detectable
Application
Rockwool plug TP25/TP36/TP40/TP50 can fit snugly into the pre-formed hole on the top of the growing cube.
Stone Rockwool Grow Cubes RB150 is highly versatile and commonly used in greenhouses and indoor grows for a variety of hydroponic crops such as leafy greens, peppers, tomatoes, and herbs. Plus, they are compatible with different hydroponic systems like drip irrigation and ebb & flow.
Product Advantage
1.Ideal water-air balance;
2.Root-safe transplant finishing;
3.Grooves aid drainage & enable root air pruning;
4.Uniform water content & conductivity across cubes;
5.Rapid root system development;
6.Compatible with most grow slabs.
Usage Tips:
1.Soak the medium in a pH - balanced nutrient solution for 15 minutes and then drain it.
2.Transplant:Place your seedling or cutting into the pre - drilled center hole.
3.Irrigate:Start regular irrigation — nutrients will flow evenly throughout.
4.It is suggested to wear a pair of gloves when using.
