![]() ![]() Even though it is a manmade, inert material, it can still be prone to algae and bacterial growth that can contaminate the hydroponics system if the feed solution is recirculated without being treated properly. It’s also recommended to wear eye protection and long sleeves if there is a chance of prolonged contact with your skin.ĭO sterilize the feeding solution before running it back through the rockwool cubes. At the minimum, wear a dust mask to prevent inhaling fibres into your lungs. But other than that, this is why people fail so often with rockwool. Then you can spray a few mistings to dampen it again. At least until you can feel the outside of the cube actually BONE DRY. ![]() The fibres are irritating to skin, lungs, and eyes so it’s imperative to protect yourself. Rockwool is always hard to start seeds in. Their natural pH is too high for optimum plant growth and will create problems and instability within the hydroponics system if left at that alkalinity.ĭO wear protective gear to keep yourself safe when handling rockwool material. Our formulas are greenhouse tested to ensure quality and consistency. Re-wetting – Grodan rockwool is easy to re-saturate if it dries out, reducing the risk of root damageĭO take the time to properly prepare rockwool cubes before starting seeds or trying to root cuttings. FoxFarm produces the finest potting soil mixes, fertilizers, and liquid plant foods. Uniformity – quality and structure is uniform, so water content and EC (CF) will remain the same for every plant Increased root development – structure of the rockwool is designed for optimum air / water balance and accelerated rooting Reduced risk of pests and diseaseĮven root growth – predominantly vertical fibre structure means identical levels of resistance for each root, so roots grow evenly The benefits of Grodan rockwoolĬompletely sterile and inert – ideal hydroponic growing medium. Box of 25/150 contains 2700 cubes, box of 36/77 contains 1386 cubes. When rooted, rooting plants can be transplanted into a larger cube or pot once they have been rootedĪvailable in two sizes 1” (25/150) and 1.5” (36/77), they are compatible with all Grodan Delta Cubes. For ease of handling, the SBS come in their own handy plastic tray. Rockwool Cubes in Tray are ideal for seed or cutting propagation. ![]()
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