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Grodan Stonewool Gro-Slabs Uni-Slab 9.5 inch x 8 inch x 4 inch (case of 16)
Case of 16 The Uni-Slab is specifically designed with one plant in mind, hence the name. This smaller size meets the challenge of mobility for re-arranging plants as needed. The slab has certain advantages over the big blocks; one, the top plastic protects completely from algae growth and two, the low height provides a sturdier base-meaning the plants are less likely to fall over. Use drip or top irrigation for Uni-Slabs with Gro-Blocks™ on top.The Rockwool volume of the Uni-Slab is 304 oz.