Grodan AO plug 25/40
Product detailed description
The Grodan planting cube measuring 2,5 x 2,5 x 4 cm is a practical growing medium. It is made from basalt wool and calcium by melting in a furnace at 1500 °C.
This produces 'stone' lava, which is further processed into thin fibres and then pressed into the desired shape. This process makes Grodan a completely sterile and inert medium.
The mineral wool (rockwool) has the ability to hold a large amount of water and also maintains a balanced air ratio, which ensures the unique development of the root system of the plant being grown.
NEVER forget to soak the rockwool (cubes, mats, grit, etc.) with sufficient lukewarm water (ideally 25°C) before use.
The water must be pH adjusted to 5.5 - 6,5
Allow the rockwool to drain properly to get rid of excess water - NEVER SQUEEZE, this will damage the fibre structure.
Size: 25x25x40 mm
Tray: 10x20 cubes (200pcs)