Grodan Delta Grodan Slabs
$6.95
Purchase Grodan Delta Grodan Slabs
Delta Grodan Slabs
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.
Grodan Expert: The slab that drains
the fastest because of its vertical fibers. These are our most popular
slabs and the ones we recommend for home hobby use.
Grodan Classsic:
The slab that stays wetter because of its horizontal fibers. Best for
hot climates and situations where less frequent watering is a
requirement.
Grodan Master: The
special wet/dry slab. The top fiber layer is horizontal and stays
wetter, while the bottom layer is vertical so it stays drier. By
placing the fiber mix like that, the slab in effect defies what gravity
does to water, allowing more even distribution of moisture throughout
the slab.
This slab is only recommended for people with years of experience growing in Grodan slabs.
These slabs come in clearly marked biodegradable UV resistant poly sleeves.
The poly sleeves have several functions;
- Comfort in handling.
- Preventing algae growth.
- Preventing roots and diseases from moving easily from slab to slab.
- Minimizing evaporation.
- Enabling full saturation of the slabs before use.
- Controlling/directing the water-run off from the slabs.
Below the table you will find details about the properties of each kind of slab.
Gro-Slabs
|
Size in inches
|
Slabs/pack
|
Expert 15/75 6” slab
|
6” x 3” x 36”
|
12
|
Expert 20/75 8” slab
|
8” x 3” x 36”
|
12
|
Expert 15/100 Fat 6” slab
|
6” x 4” x 36”
|
9
|
Classic 30/75 12” slab
|
12” x 3” x 36”
|
8
|
Classic 15/75 6” slab
|
6” x 3” x 36”
|
12
|
|
|
|
|
The diagrams on the slabs are simplified illustrations of the fiber direction in the slabs:
|
 |
Vertical fibers - water moves fast through the fibers
|
 |
Horizontal fibers - water moves slowly through the fibers
|
Purchase Grodan Delta Grodan Slabs
Select: Expert Slab - 36" x 6" x 3"; Expert Slab - 36" x 8" x 3"; Classic Slab - 12" x 3"; Expert - 36" x 6" x 3" (Case/12); Expert - 36" x 8" x 3" (Case/9); Classic - 12" x 3" (Case/8)
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The . . .
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