Grodan A-OK Stater Plugs 1.5'' 98 / SHEET bible It also combines the tolerance

It also combines the tolerance and organic nature of soil

Liquid Concentrated Nutrient

The insulation reduces heat loss & condensation

Duct components are flame resistant and self extinguishing

Includes hangers

Grodan A-OK Stater Plugs 1.5'' 98 / SHEET bible It also combines the toleranceA Ok Starter Plugs are for starting seeds and rooting cuttings prior to plugging into larger Gro Blocks. The 1. 5 size fits perfectly in the Gro Smart tray as well as all our pre drilled Gro Blocks. One advantage of using the Gro Smart tray is that it elevates the plugs above the waterline and ensures good airflow around the plugs. A Ok plugs come labeled with instructions in a shrink wrapped package that fits a standard 10 x 20 tray (flat).