Grodan Slab, 36" x 8" x 3" Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different... $7.91 Add to Cart Compare
Grodan stonewool delta starter Mini blocks 1.5" x 1.5" x 1.5" 45 pk Type a description for this product here... $6.78 Add to Cart Compare
Uni-Slab, 9.5" x 8" x 4" The Uni-Slab combines all the benefits of Grodans traditional slabs with the versatility of a block. Its large size gives great stability for any size plant, and it contains all plant roots safely within the slab, protecting them from light and outside... $4.40 Add to Cart Compare
