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a smooth lining on the interior to avoid chafing
Use a 1/8 inch layer as a top dressing around plants
To ensure best results
and hydroponic growing
Cultilene (Cultiwool) 4x4x4 Rockwool Block (144 pieces per case) Water Heaters Chillers a smooth lining on theCultilene Blocks have an optimum air water ratio for healthy root growth and allow for great continued rooting thanks to the extremely even distribution of water and EC. These blocks have an excellent water absorption and (re)saturation rate and feature the exclusive Plant Comfort fibre structure which has a lower density of resistance during rooting with no loss of firmness. All blocks except the 3x3x3 also have the Optiplus feature, which is a
