Cultilene 4x4x2.5 Block w/ Optidrain (216 pieces per carton/case)

Cul4x4x25block

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Details
Cultilene 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 fiber 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 unique design on the underside of the block allowing for excess water to drain away easily.

Superb air to water ratio
A fiber structure that holds water longer
Less resistance for the roots to grow in, resulting in stronger roots
Encourages faster initial rooting
Guaranteed firmness
Rockwool or stonewool, also called mineral, rock, or slag wool is one of the most popular growing mediums in hydroponics operations due to its versatility and water retention characteristics.

Sold by the case. This media is inert and pathogen free.

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