eFinity Cultiwool hydroponic Planting block丨fast Absorption of Water, Excellent air-to-Water Ratio, Vertical Fiber Structure-6"× 6"× 6“,8 Pieces

✅[Professional]: Cultiwool has many years of experience in developing rock wool products in the Netherlands, and is favored by some of the largest industrial communicators in the world. The quality of their latest rock wool cubes is by far the best on the market. Our rock wool cube uses Cultiwool's unique Plant COMFORT fiber structure. ✅[Material]: Made of lava, which is good for the environment and at the same time conducive to the storage of nutrients, compressed into a cube, fibrous to ensure firmness. ✅[Size]:6in x 6in x 6in (LxWxH) ✅[Suitable for growth]: High fiber density can make better use of water and fertilizer, while retaining sufficient oxygen for plant growth. ✅[Convenient drainage]: With Optiplus function, this is a unique design at the bottom of the building block, which can easily drain excess water.