£9.95 – £29.95
— OR —
1cm square cubes of Grodan rockwool, clean, lightweight and well aerated. Ideal for passive growing in pots or use in the Wilma system. Mix with clay for a well aerated, free draining hydroponic growing medium.
1 x 25L Bag, 1 x 90L Bag, 1 x 90L Box
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