Greengrow Upuper 8x8x8 Block - CM 20 PRO - Case (18 Pcs)

Product Description UPuper®8 inch Grow block is the largest block ever produced! The 8 inch cubes have twice the volume of the 6 inch grow blocks, it is big enough to grow a large plant for its entire life. It is usually used in the final stage of cannabis planting.Product SpecificationProduct model: CM 20PROSingle size: 8 *8 *8 (L*W*H（inch))"Hole: Usually don't have hole.Accept custom hole, Size: φ1.57"",H1.57"""Grooves: HaveFilm: Have silver/white film wrapped.Package: 18 pcs/carton*Any other size request, please contact us online! 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. No pre-cut hole means plants can sit on top easily, you can put the mini block with plant directly on top of the CM 20PRO grow block.2. Packaged in photodegradable, UV-