Rock wool board in hydroponics


What makes rock wool perfect for use in agriculture is the fact that it comes from natural materials; basalt rock and chalk. Hydroponics especially benefit greatly from the use of rock wool board. Rock wool is made using massive amounts of heat which renders it biologically and chemically inert thus creating the perfect growing medium. For hydroponic applications, rock wool board comes in many shapes such as cubes, plugs, blocks, and slabs.

The most important aspect of any shaped rock wool is the fact that it allows growers to quickly react to changes in the plants root system. Since rock wool is completely inert, it doesn’t affect the availability of nutrients for plants. It also has an almost zero absorption rate for water which leaves more for the plants compared to other no soil approaches. Organic matter like peat moss and sawdust have a 65% water retaining rate and 4%-8% of the nutrient solution gets soaked up by said material and rendered unavailable for the plants.

Owing to it’s unique pore structure, rock wool can take on large amounts of nutrient solution without becoming waterlogged. After over watering, it will drain well in a rather short time leaving 40%-50% of its pore space occupied by air. Therefore, purposeful saturation of the rock wool board with extra nutrient solution can be used as a management strategy to maintain crop health and produce optimum growing conditions for the root zone.

To order your rock wool board for use in hydroponics or conventional insulation purposes contact us today.

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