A-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 the 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 10x20 tray (flat).
- A-OK PLUGS / MACROPLUGS: AO 36/40 (1.5" plugs)
- Size of Plug: 1.4" sq. x H 1.57"
- Plugs/Package: 98
