Greengrow Upuper 6x6x6 Block - CM 15 PRO - Case (48 Pcs)

Product descriptionUPuper® 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 SpecificationSingle size: 6 *6 *6 (L*W*H（inch))Hole Size: φ1.57",H1.57"Grooves: With or Without Grooves, both are availableFilm: 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 Advantage1. 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 whi