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Horticultural Rockwool Slabs for vegetable cropping
Rockwool is a horticultural growing media made from the natural ingredients Basalt rock and Chalk. These are then melted at 1600°
C into a lava which is blown into a large spinning chamber, which pulls the lava into fibers like "cotton candy." If you have ever
visited a volcano you have probably seen these fibers flying around in the air surrounding the volcano. Once the fibers are spun
they are then compressed into a mat which is then cut into slabs and cubes. The rockwool granulates are just bales of uncompressed
fibers. The process is very efficient, producing 37 cubic foot of wool from 1 cubic foot of rocks. Since rockwool is born in fire
it renders the product chemically and biologically inert and creates the ideal growing medium for hydroponics. Since its
development in Denmark in the early 1970's, rockwool has become the major vegetable and flower production medium throughout Europe
and North America.
Horticultural Rockwool growing media is primarily available in two general formats. First, as rigid slabs, blocks, and cubes known
as "bonded" products because the fibers are held together with a "gluing" or binding agent which renders them stiff and brittle.
This is the primary format for the vegetable and cut flower industries. Secondly, rockwool is available as a highly refined and
consistent hydrophilic or hydrophobic granulate which is basically water absorbent or water repellent. This format can be used as
a component in various peat moss based soilless media or for ground bed incorporation to improve the tilth of heavy clay or light
sandy soils.
Hydroponic Rockwool for planting standard popular size:
1.Density:
* 70kg/m3 for most the vagetables growing,such as lettuce,tomato,cucumber etc;
* 80kg/m3, 100kg/m3 for the Coarse Stem plants,such as flowers etc
2.Standard popular size:
* For seeding: 25mm, 30mm, 40mm,50mm etc
* For plants growing: 7mm, 10mm,15mm etc
* For Roots spread:1000x200x70mm, 1000*200*80mm etc.
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