Hydroponic Rock Board, 36 Cubes Rockwool Grow Blocks, High Water Retention Soilless Cultivation Medium for Greenhouse Planting
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$9.89at WalmartObserved at 1:43 PM
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Boost your hydroponic growing success with this professional rock wool board for soilless cultivation. This slab is pre-divided into 36 independent small rockwool cubes, you can easily split individual blocks for seed starting, plant cuttings, seedling breeding and hydroponic vegetable cultivation. Made of high-quality rockwool, this growing medium features porous fibrous structure. It balances water retention and air permeability perfectly. It can store sufficient water and nutrition for plant roots, meanwhile leave air space to avoid over-saturation and root rot, greatly raise the survival rate of seeds and young seedlings. Suitable for both home garden hobbyists and commercial greenhouse planting. Great for tomatoes, peppers, lettuce, herbs and various flowering plants. The rock wool block can be reused after rinsing and disinfection, which saves your gardening cost. The overall size of 29.5×13×4cm matches most hydroponic trays and planting equipment. It is an efficient, reliable soilless substrate choice for indoor planting and greenhouse hydroponic projects.