FLORAFLEX - INCUBATOR PLUGS 40|40 - PACK 50The Incubator Plugs 1. 25" 40 40 are made with Coco Coir, Peat Moss, & Bio Char. Floraflex Plugs are engineered for moisture retention and aeration for ideal rooting and growth. Use with the Incubator System for optimal results To use Incubator Plugs for seeds: 1. Place your seed into the hole on the top of your Incubator Plug 2. Keep your trays in a warm, dark place to optimize germination rate. Avoid temperatures of 90F 32C or above to prevent seed