Grodan Crop Box Slab - 370 x 550 x 150mm GroFan_8 Because many hydroponics nutrients provide

Because many hydroponics nutrients provide no amino acids

Safeguards against stresses resulting from pH fluctuations

orange (citrus aurantium dulcis) oil (organic)

crystals and even tarot cards

Does not have a shimmering/ storm effects mode setting

Grodan Crop Box Slab - 370 x 550 x 150mm GroFan_8 Because many hydroponics nutrients provideGrodan Crop Box Rockwool Slab 370 x 550 x 150mm 1X Grodan Rockwool Crop Box Slap Wrapped 37 X 55 X 15cm Thanks to their revolutionary hydrophilic fibres, Grodan substrate slabs and blocks produced using this technology offer users considerable advantages over other propagation substrates. Tried and proven to be the best propagation substrate available.