VIVOSUN 1" Rockwool Cubes, 200 Plugs Stonewool Starter Grow Cubes for Cuttings, Cloning, Plant Propagation, Seed Starting, Hydroponic Grow Media for Vigorous Plant Growth, 4 Sheets of 200 Plugs RO Fish tank bubbler can release

Fish tank bubbler can release smaller

Dust cover and shock-proof foam cloth packaging Safe

No fillers

USER-FRIENDLY DESIGN: These hanging grow light strips are slim and equipped with a complete hanging kit

TESTED AND CERTIFIED BY SGS - Against from NSF/ANSI 58& 42American National Standard & EPA 200 standard

VIVOSUN 1" Rockwool Cubes, 200 Plugs Stonewool Starter Grow Cubes for Cuttings, Cloning, Plant Propagation, Seed Starting, Hydroponic Grow Media for Vigorous Plant Growth, 4 Sheets of 200 Plugs RO Fish tank bubbler can releaseFeatures: Rockwool Cubes Material: This rockwool is crafted from natural ingredients, including 60% basalt, 20% coke, 20% limestone, and a trace of iron slag; They are melted at high temperatures and spun into fine fibers, then compressed into blocks by a unique process, which makes them durable. Excellent Permeability: This rockwool has a high porosity of 95%, which enables plant roots to access plenty of oxygen for rapid growth; It also fosters the