Grodan Grow Cubes 125ltr are clean, lightweight and well aerated. The 1cm rockwool cubes are ideal for all types of hydroponic growing, for passive growing in pots and drip irrigation. Mix with clay for a well aerated, free draining hydroponic growing media. These small cubes provide consistent easy access to oxygen due to the open spaces amongst the cubes, with excellent air/water balance, simple controllability of water and nutrients and strong root growth throughout the entire block. 125lt
