Grodan Rockwool
Grodan has been the leading name in Rockwool production for the last 20 years, and HTG Supply is proud to stock their high-quality products. Made from spun basalt rock fibers that are then formed into slabs or cubes, rockwool is a popular growing substrate for hydroponic gardening. Rockwool, also known as stonewool, is perfect for seed starting, ebb and flow systems, and drip irrigation hydroponic systems due to its inert properties and the fact that it does not absorb water leaving it available to the plants for growth and development.
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Grodan Improved GR32 - 6 x 6 x 6 Inch Hugo Block
$5.00
Grodan Delta 4 3" x 3" x 2.5" - Strip of 8 (Unwrapped)
$4.39
Grodan 9.5" x 8" x 4" Rockwool Uni-Slab
$7.67
Grodan Rockwool Grow Chunks - 2 Cubic Feet Bag
$59.92
Grodan Rockwool / Stonewool Gro-Slab - 12" x 36" x 3"
$20.61
Grodan A-Ok 1.5 Inch Starter Plugs Case - 30 Sheets of 98 Plugs
$657.75
Grodan Rockwool / Stonewool Gro-Slab - 8" x 36" x 3"
$13.63
6 Inch Rockwool Cubes - 6x6x6 Gro Blocks
$3.73
Grodan A-Ok 1.5 Inch Starter Plugs Sheet of 98
$21.93
Grodan A-Ok 1 Inch Starter Plugs Sheet of 200
$16.25
Grodan Rockwool / Stonewool Gro-Slab - 6" x 36" x 4"
$14.04
Grodan Rockwool / Stonewool Gro-Slab - 6" x 36" x 3"
$10.53
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