Grodan Stone Wool Gro-Slabs Expert Slab 20/75 8 x 3 x 36 Single Slab Perlite +/-10%) PPF 2100 µmol/s Photon

+/-10%) PPF 2100 µmol/s Photon Efficacy 2

This large-grind mix is 100% soluble and will not clog irrigation systems or leave sediment in reservoirs

75% and 84% if the application needs more moisture

save on costs by bulk purchasing and preserving seasonal herbs

Scheduling and safety on the Master Controller EL3

Grodan Stone Wool Gro-Slabs Expert Slab 20/75 8 x 3 x 36 Single Slab Perlite +/-10%) PPF 2100 µmol/s PhotonGrodan Stonewool Gro Slabs Expert Slab 20 75 8 x 3 x 36 Single Slab Grodan introduces the Stonewool Gro Slabs Expert Slab 20 75, tailored exclusively for hobbyists looking to maximize their plant growth potential. This slab is meticulously crafted to offer faster drainage due to its unique vertical fibers, setting it apart from the Classic series. Why Choose Grodan Stonewool Gro Slabs Expert Slab 20 75? Designed for Hobbyists: This slab is perfect for