Block 1.5x1.5x1.5

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 Blocks - Grodan Delta blocks are the most uniform blocks available on the market. They feature improved grooves at the base to promote better drainage. They are available in a large assortment of sizes and configurations to suit all types of plants. These growing blocks are used for direct sowing or inblocking onin of Macro and Multiblock raised plants. AO 36/40 plugs fit well into the hole sizes provided by the blocks. The blocks can then be placed on top of a slab to provide for a larger growing volume. Hugo is the largest of the growing blocks. It provides enough growing volume to support a larger plant, so it does not need to be placed on top of a slab.

Write a review

Please login or register to review

Block 1.5x1.5x1.5

  • Brand: Grodan
  • Product Code: RWMM4040
  • Availability: In Stock
  • $8.60
  • $7.05
For propagating cuttings or for quick-starting seeds, seedlings, or transplants, no hydroponic syste..
$291.50 $239.03

These high quality pumps operates submerged or in-line. 10 foot grounded power cord. 1/2 in NPT. Cer..
$92.95 $76.22

Durable, hard plastic that is washable and reusable. New bigger sizes to accommodate larger nursery ..
$5.93 $4.86

Plant Nutrient Facts for Hydroponics, and how to make your own fully formulated plant nutrient This..
$24.95 $20.46

Build up your plant cell walls and encourage productivity with Sturdy Stalk, a potassium silicate su..
$28.00 $18.76

This waterproof poly film is black on the outside and white on the inside. The 5 mil thickness polye..
$457.95 $375.52

Hydro-Logic's 1/4in blue tubing. Comes in a 500 foot roll. For use in customizing your indoor hydrop..
$105.00 $86.10

Quick and easy solution for connecting flex ducting. Crimped on both ends with strengthening bead fo..
$3.79 $3.11

The Accurate pH 7 utilizes the electronic ground field effect of the earth on two dissimilar metals...
$66.95 $54.90

Fruit & Vegetable Insect Killer  Specially formulated combination of insecticidal soap and aromatics..
$10.95 $8.98