Grodan Stonewool A-OK Starter Plugs complete grow kit Triple Film Lamination: Consisting of

Triple Film Lamination: Consisting of three protective layers

Durable Leap pH Probe: Toughened tip for reliable measurements in any substrate

This series uses diodes from the American brand Bridgelux

Through this amino acid chelation process

Health Hazards: Inhalation of pentane vapor can cause respiratory irritation

Grodan Stonewool A-OK Starter Plugs complete grow kit Triple Film Lamination: Consisting ofA OK Starter Plugs for starting seeds and rooting of cuttings prior to plugging into the larger Gro Blocks. A OK Starter Plugs come labeled with instructions in a shrink wrapped sheet that fits a standard 10 x 20 tray (flat). Note: Item #713020 is supplied without shrink wrap.