Grodan Classic Slab 30/75 Case

Grodan Classic Slab 30/75 Case provides the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growers. They come in clearly marked biodegradable UV resistant sleeves for comfortable handling and algae prevention.

Specifications:

* Size: 12" x 3" x 36"
* 8 Slabs per case
* Classic horizontal fibers for slower drainage; best for hot/dry climates
* Expert vertical fibers for faster drainage; best for hobbyists