Rockwool Cube 1.5cm x 7.5cm x 6.5cm

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Rockwool can hold large quantities of water and air that aid root growth and nutrient uptake in hydroponics; the fibrous nature also provides a good mechanical structure to hold the plant stable. It is used primarily for drip hydroponic systems.

Rockwool is made by melting a combination of rock and sand and then spinning the mixture to make fibers which are formed into different shapes and sizes.

Square Rockwool Plugs (36 mm x 36 mm (Top) x 40 mm (H)) are sold INDIVIDUALLY as well.