Jowlawn 1.5" Rockwool Cubes for Hydroponics - 2 Sheets Rockwool Grow Cubes for Rooting, Cuttings, Clone Plants, Starting Seeds, Ideal Rockwool for Hydroponic Growing (98 Plugs in Total) apm-leftimage {float:none

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Jowlawn 1.5" Rockwool Cubes for Hydroponics - 2 Sheets Rockwool Grow Cubes for Rooting, Cuttings, Clone Plants, Starting Seeds, Ideal Rockwool for Hydroponic Growing (98 Plugs in Total) apm-leftimage {float:nonePremium MaterialOur rockwool grow cubes are very effective hydroponics substrates, made of high quality basalt and chalk, being melted at high temperature then centrifuged at high speed to spraye into 0. 005mm fibers and pressed into blocks. Benefits of Soilless CultivationRockwool cubes are superior to other typical hydroponic supplies, with up to 96% porosity and 91% water. Even distribution of nutrients, does not absorb nutrients from the crop,