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| Grodan® Rockwool |
Rockwool is probably the most widely used growing medium on the planet. It holds plenty of water and consists of about 15% air (as long as it is not sitting directly in water) , which means its virtually impossible to overwater.
Ideal for transplanting, the 1 and 2" cubes fit the 3 and 4-inch blocks which fit onto the slabs. The V-shaped cubes in the sheets of multicubes encourages rooting within, rather than between, individual blocks. All multicube sheets fit a standard 10x20 flat.
Totally biodegradeable and reuseable, rockwool should be conditioned for first use by soaking for eight hours in water at pH 5.0and then rinsing with your nutrient solution. To soak cubes, put them in a bucket filled with water. To soak slabs, cut a hole in the plastic bag they come in and fill it with water until totally saturated. After 24 hours, cut drainage slits in the bottom.
Although rockwool is nontoxic, when dry it can cause skin irritation. For this reason it is best handled wet. If irritation occurs, wash hands for instant relief.
Click here to learn more about Grodan® Stonewool.
The Hugo Blocks are 6" x 6" x 6" and 8" x 8" x 8"
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| Product ID: XROCKWOOL |
Category: Hydroponic Systems-Accessories-Grow Media
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