Growool Rockwool Flock is supplied in a 13.6kg compressed bag that expands into loose fibers upon opening. This hydroponic growing medium, made from spun molten basalt rock and limestone, offers a fibrous structure with high water-holding capacity and 3-5% volume in water, balanced by 95-97% air-filled porosity for optimal root aeration. pH stable at 5.5-6.5 after rinsing to reduce EC from 0.1-0.6 mS/cm. Sterile and inert, it resists pathogens and nutrient imbalances. Suitable for propagation, seedlings, cuttings, and soilless cultivation systems.
Rockwool flock – 13.6kg
$135.00
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