Grodan Stone Wool Gro-Slabs Expert Slab 20/75 8 x 3 x 36 Single Slab Perlite The two-year figure applies to

The two-year figure applies to a sealed case

75% and 84% if the application needs more moisture

6 in sidewall with 50 gallon capacity: Deep enough for a genuine flood-and-drain cycle rather than runoff catchment alone

Growers consistently report tighter internodal spacing and better yields on flowering plants compared to standard HPS — the fuller spectrum drives more complete photomorphogenic responses than the narrow red band HPS relies on

save on costs by bulk purchasing and preserving seasonal herbs

Grodan Stone Wool Gro-Slabs Expert Slab 20/75 8 x 3 x 36 Single Slab Perlite The two-year figure applies toGrodan 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