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Stonewool / Rockwool

The use of stone wool substrate offers many advantages. Thanks to the controlled manufacturing process, this growth medium is of a consistently high quality. The sterile production under extreme temperature ensures that the product is clean and sterile. Its unique hydrophilic fibre also makes the cultivation on stone wool substrate very easy to control. The grower can administer the amount of water and nutrients the crops need in a very directed and controlled manner, to achieve optimal growing results.

RW COCO CAP 6 in. 10 EA The organic alternative to plastic covers for rockwool blocks. Use Coco Caps to help prevent light penetration that may cause algae growth.	Price: $4.95 Sale: $4.95	Qty:
UNI-SLAB 9.5 in. X 8 in. X 4 in The Uni-Slab combines all the benefits of Grodan’s traditional slabs with the versatility of a block.	Price: $5.35 Sale: $5.35	Qty:
Delta Slab 36 in. x 8 in. x 3 in. (Rockwool / Stonewool) Grodan Grodan Stonewool is a proven hydroponics growing medium preferred by garden enthusiasts everywhere. This 36 in. x 8 in. x 3 in. Delta Slab is pe...	Price: $9.50 Sale: $9.25	Qty:
Gro-Blocks - 4 in. x 4 in. x 2.5 in. DM6 (Rockwool / Stonewool) Grodan This is a strip of six 4 in. x 4 in. x 2.5 in. Gro-Blocks, each with pre-formed holes.	Price: $5.50 Sale: $5.50	Qty:
A'Ok Starter Plugs - 1.5 in. sq. Sheet of 98 starter cubes - Grodan Stonewool Made in Denmark since 1969, horticultural stonewool is widely recognized as an ideal growing substrate. Each Grodan A'Ok Starter Plug has a pre-formed...	Price: $12.25 Sale: $11.75	Qty:
Mini-Blocks - 1.5 in. sq.- (45) wrapped mini blocks (Rockwool / Stonewool) Grodan Three strips of 15 wrapped Mini-Blocks - 45 total blocks each measuring 1.5 in. square.	Price: $8.50 Sale: $8.50	Qty:
Gro-Blocks - 2 in. x 2 in. x 2 in. 24 wrapped mini blocks - MM50/40 Grodan Stonewool is a state-of-the-art growing substrate preferred by hundreds of hydroponics gardeners. Seeds or cuttings are started in these Grodan Mini-B...	Price: $6.25 Sale: $5.95	Qty:
RW DU4 NO HOLE (8EA) Stonewool is recognized the world over as the ideal hydroponics growing substrate. Seeds or cuttings are started in these Grodan Gro-Blocks and, once ...	Price: $4.75 Sale: $4.75	Qty:
Gro-Blocks - 3 in. x 3 in. x 2.5 in. 8 Wrapped Blocks - DM4 (Rockwool / Stonewool) Grodan This is a strip of eight 3 in. x 3 in. x 2.5 in. Gro-Blocks, each with pre-formed holes.	Price: $4.95 Sale: $4.95	Qty:
RW DM 5.6 3X3X4 in. 32C Stonewool is recognized the world over as an ideal hydroponics growing medium. Seeds or cuttings are started in these larger Grodan Gro-Blocks and, on...	Price: $7.95 Sale: $7.95	Qty:
Gro-Blocks - 4 in. x 4 in. x 3 in. DM8 (Rockwool / Stonewool) Grodan This is a strip of six 4 in. x4 in. x 3 in. Gro-Blocks, each with pre-formed holes.	Price: $7.25 Sale: $7.25	Qty:
Gro-Blocks - 4 in. x 4 in. x 4 in. (Rockwool / Stonewool) Grodan This is a strip of six 4 in. x 4 in. x 4 in. Gro-Blocks, each with pre-formed holes.	Price: $8.95 Sale: $8.95	Qty:
Gro-Blocks 4 in. x 4 in. x 3 in. DU8 (Stonewool / Rockwool) Grodan Known for its quality, consistency and ease of use, high-performance Grodan stonewool is used by hydroponics gardeners the world over. Seeds or cuttin...	Price: $7.25 Sale: $7.25	Qty:
Delta Slab 36 in. x 6 in. x 3 in. (Rockwool / Stonewool) Grodan Stonewool is recognized the world over as a dependable hydroponics growing medium and Grodan stonewool in particular is known for its quality, consist...	Price: $7.40 Sale: $7.40	Qty:
Delta Slab 6 in. X 4 in. X 36 in. SLAB (Rockwool / Stonewool) Grodan Grodan Stonewool is a proven hydroponics growing medium preferred by garden enthusiasts everywhere. This 36 in. x 6 in. x 4 in. Delta Slab is pe...	Price: $9.95 Sale: $9.95	Qty:
Cocodan Coco Caps 4 in. 10 EA The organic alternative to plastic covers for rockwool blocks. Use Coco Caps to help prevent light penetration that may cause algae growth.	Price: $3.95 Sale: $3.95	Qty:
BIG MAMA 8 in. X 8 in. X 8 in. - Grodan The largest block ever produced by Grodan, the Big Mama™ measures 8 in. x 8 in. x 8 in. and contains well over twice as much wool as the popular Hugo block.	Price: $7.75 Sale: $7.75	Qty:
BLOCK CVRS 4 in. Qty. 40 Dual-purpose Sunleaves Block Covers reflect light back towards plants in addition to protecting them from algae growth. Black on one side, white on th...	Price: $7.50 Sale: $7.50	Qty:
BLOCK CVRS 6 in. Qty. 40 For Rock Wool and Other Grow Media Blocks light from media reducing algae and pest problems Use white side up to reflect light Use to...	Price: $13.95 Sale: $13.95	Qty:
Gro-Blocks - Hugo - 6 in. x 6 in. x 6 in. (Rockwool / Stonewool) Grodan This is a single 6 in. x 6 in. x 6 in. Gro-Block with a pre-formed hole. Grodan stonewool is known for its quality, consistency and performance.	Price: $3.40 Sale: $3.35	Qty:
Growcubes 23 gal Bag. Grodan Stonewool "Easy to use and environmentally friendly, Grodan growcubes provide plant roots with a stable foundation and an excellent balance of air and wate...	Price: $38.95 Sale: $38.95	Qty:
Block Covers 4.5 in. Covers (40ea) Sunleaves Dual-purpose Sunleaves Block Covers reflect light back towards plants in addition to protecting them from algae growth. Black on one side, white on th...	Price: $5.95 Sale: $5.95	Qty:
Growcubes 3 gal. Bag Grodan Stonewool "Easy to use and environmentally friendly, Grodan growcubes provide plant roots with a stable foundation and an excellent balance of air and wate...	Price: $6.95 Sale: $6.95	Qty:
GRODAN MACRO PLUG 1.5IN. Perfect for rooted cuttings. Same great product with new packaging. Now 50 Macro Plugs in gold foil bag that can be hung up.	Price: $10.75 Sale: $10.60	Qty:

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