Phenolic foam to germinate seeds.

Size: 30x22,5cm

108 cells 

1 cell: 2,5x2,5x3cm

After dipping the foam in water ( to remove impurities), make a cavity in the foam with a sharp object and insert the pelletized seed. 

The Phenolic foam board must be put in a tray and keep the botom of the tray filled with 2/3mm of water during germination.