Expert Slab 36X6X3

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 types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Slabs - The final stage of planting with growing blocks are the Grodan slabs. These slabs come in clearly marked UV resistant poly sleeves for ease of use. Recommended for larger, long term crops with extensive roots like peppers, tomatoes, or cucumbers. Typically, seedlings in blocks are placed onto slabs. Grodan Expert is the slab that drains the fastest because of its vertical fibers. By far the most popular slab for the hydroponic hobbyist market. Grodan Master is a special wet/dry slab. The top layer is thicker, which stays wetter, while the bottom layer stays drier. In effect it defies gravity, allowing more even distribution of moisture throughout the slab.

Write a review

Please login or register to review

Expert Slab 36X6X3

  • Brand: Grodan
  • Product Code: RW157512
  • Availability: In Stock
  • $7.75
  • $6.36
The LF-20 Ballast Switching Controller allows you to expand your growing area without having to incr..
$2,298.95 $1,885.14

The Measure Master scales can be used for a variety of different purposes including the precise meas..
$59.95 $49.16

True Liberty Bags are the original all-purpose home and garden bag. These bags are used by commercia..
$29.95 $24.56

• Insecticide made of natural pyrethrin and canola oil• Use on vegetables, fruit trees, houseplants,..
$132.99 $109.05

Use Power Clone by Botanicare for rapid, robust roots. Power Clone is crafted for serious gardeners ..
$15.50 $12.71

This sturdy white cover fits Hydrofarm's HGFTW24 white flood table and HGFT24 black flood table...
$66.95 $54.90

pH Tester with 1 point manual calibration, ± 0.2 pH accuracy, range: 0.0 pH to 14.0 ph. Full-range p..
$32.99 $27.05

Gaia was originally the bloom base to Oregon's Only's four part nutrient line. Derived from digested..
$180.00 $120.60