For seeds that take > 7 days to germinate, such as some flowers, melons, tomatoes, beans plants, our rockwool will ensure your seeds get the sufficient water for germination, and yet not to wet that cause it to rot before the seeds even got a chance to germinate. For seeds that take < 5 days to germinate, such as veggies & herbs, use our growth sponge instead ! It’s more economical.
General specification : Dimensional size : 12″ x 8″ (305 x 200mm), 1″ (25mm) thick Snow white in color. Each slab comes with 12 x 8 cubes, with each cube measuring ~ 25x25mm, height 25mm. yielding a total of 96 cubes per slab.