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craft or hobby that requires additional lighting
vapors and particulate hazards at concentrations up to 10 times the Permissible Exposure Limit (PEL)
Light block packaging prevents oxidation from UV light that could alter the buffer value
The PAR for this first-class product
GRODAN IMPROVED GRO-SLAB - 36X6X3'' (Case of 12) Plugs craft or hobby that requiresMost plants can grow in Gro Slabs but they are particularly good for growing large vine crops. For plants growing outdoors during mid day sun Gro Slabs provide a good water buffer. The 12 Gro Slab is considered a wet slab due to its horizontal fibers. It holds more water than other slabs and can support more plants than any stone wool slab. The rest of the Gro Slabs are all comprised of vertical fibers, which allow for faster drainage and a drier
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