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 Versatile Applications: Includes a vapor

Versatile Applications: Includes a vapor outlet and flexible hose

no more dealing with separate parts

No fillers

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

Fish tank bubbler can release smaller

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 Versatile Applications: Includes a vaporFeatures: 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