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Greengrow Upuper Growing Block - CM 15 PRO - Case (48Pcs)


Product description
UPuper® 6 inch Rockwool grow blocks are usually used in the final stage of cannabis planting.
It can be used as a container for cannabis growth to harvest, or placed on the grow slab to allow the roots to continue growing.
It is the most popular cultivation block in hydroponic cannabis planting growers.

Product Specification
Single size: 6 *6 *6 (L*W*H(inch))
Hole Size: φ1.57",H1.57"
Grooves: With or Without Grooves, both are available
Film: Have silver/white film wrapped.
Package: 48 pcs/carton

Product Parameter (Property: Value)

  • Bond strength: NA
  • Sink time: <25s
  • Water absorption rate: >=900%
  • Organic matter content: <1.5%
  • Meet GMP Hygiene requirements (Bioburden test): No microorganisms
  • Content of toxic and harmful heavy metals: Not detectable levels

Product Advantage
1. Provides enough growing volume to support a larger plant.
2. A wetting agent ensures nutrients are immediately plant available and high fiber density makes better use of water and fertilizers while allowing dry back.
3. One of the most uniform grow blocks available on the market.
4. Eliminate the need to purchase proprietary tables, allowing growers to customize their space at a fraction of the cost.
5. Through precise planting control, decrease stall and shorten your completion harvest cycle.
6. Automated production, consistent product performance, providing a favorable environment for cannabis growth while ensuring consistent cannabis growth, convenient management, and unified harvest.
7. Packaged in photodegradable, UV-resistant, sleeves for comfortable handling and algae prevention.
8. Grow block holes are the perfect size for any 1.5 inch starter plug.

Usually used in the final stage of cannabis planting.The block also can be placed directly on the grow slab to allow the roots to continue growing from the block to the slab.

Practice TIPS
1. You need pre-soak them before use.
2. Adjust PH of 5.5-6.5 for cannabis planting.
3. You can remove the wrapping of the grow block, cut it and mix it with the soil to improve the air permeability of the soil.

Greengrow Upuper Growing Block - CM 15 PRO - Case (48Pcs)



  • What's the advantages of hydroponic culture?

    Hydroponic vegetables provide nutrients and water directly to the roots through nutrient solutions, making their nutrient supply more sufficient, balanced, and rapid. Vegetables grown in this way have yields several times or even more than ten times higher than those grown in traditional soil or substrate cultivation.

  • What's the advantages of rock wool cultivation?

    Agricultural rock wool cultivation is the most advanced cultivation technology in modern agriculture. From cultivation facilities to environmental control, it can be monitored and regulated according to the needs of crop growth and development. Therefore, agricultural rock wool cultivation has advantages that traditional soil cultivation cannot surpass.

  • I'm a business grower, can I get a discount?

    Yes, we offer wholesale discount for business growers. If you're shopping in volume, please contact us for the wholesale price and any other discount programs that you may be eligible.