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AgroDynamics
Grodan Stonewool
aka Rockwool


Agro Dynamics Logo
Grodan Logo
AgroDynamics® Grodan® Stonewool
or Rockwool
Stonewool products are made from basalt rocks and chalk, which come from the Earth. Mimicking Mother Nature's production of "angel hair" during volcanic activity, the Grodan Stonewool manufacturer heats rocks to 1600° C, to create lava. The lava is blown into a spinning chamber, which makes fibers similar to cotton candy. The fibers are packed into mats, from which Grodan cubes, blocks and slabs are cut. Small tufts of fibers are also produced and bagged as "Stonewool granulate". The products make excellent use of natural resources: one cubic yard of rock becomes 37 cubic yards of agricultural 'rockwool'!

Grodan stonewool was developed in Denmark in the early 1970's. The Grodan stonewool product is the main reason that most of the worlds greenhouse vegetables are now grown hydroponically. Grodan stonewool takes up 80-90% of it's own volume. It is wrapped in biodegradable plastic and the stonewool can be re-used in your garden to improve the aeration and waterholding capacity. Grodan stonewool has the proud distinction of going into space on Challenger in 1986 and is still being used in NASA's testing with hydroponics.

Rockwool for Propagation

Grodan® Stonewool
MultiBlocks
Multiblocks are designed for seed and cutting propagation prior to "blocking on" into larger growing blocks. Multiblocks are a free standing module type growing system.
Grodan Stonewool MultiBlocks
The V-shaped individual "cell" within a multi block sheet allows effective air pruning. This encourages rooting within, rather than between, individual blocks. All multiblocks come in a sheet that fits a standard 10x20 flat.

AO3640 individual blocks measure 1.4 inches square by 1.57 inches tall and are prepunched with a small hole for seeds or cuttings. AO3640 blocks are sold by the individual sheet of 98 blocks which fits into any standard 10 inch by 20 inch propagation tray and by the case of thirty 98 block sheets, or 2,940 individual blocks.

AO5040 individual blocks measure 2.0 inches square by 1.57 inches tall and are also prepunched. AO5040 blocks are sold by the individual sheet of 50 blocks which fits any standard 10 inch by 20 inch propagation tray and by the case of thirty 50 block sheets, or 1,500 individual cubes.
Order #ROC3640
Grodan Stonewool
AO3640 MultiBlocks
Sheet of 98 Blocks
12.95

qty:  
Order #ROC3640C
Grodan Stonewool
AO3640 MultiBlocks
Case of 30 Sheets
2,940 Blocks
319.00

qty:  
Order #ROC5040
Grodan Stonewool
AO5040 MultiBlocks
Sheet of 50 Blocks
10.95

qty:  
Order #ROC5040C
Grodan Stonewool
AO5040 MultiBlocks
Case of 30 Sheets
1,500 Blocks
269.00

qty:  

Grodan® Stonewool
MiniBlocks
Miniblocks are used for seed and cutting propagation. This cube is popular for production of aquatic plants. Each block is wrapped in white plastic on four sides and supplied in convenient 23.5 inch length of "tear away" strips of 15 blocks.
Grodan Stonewool MiniBlocks
MM4040 MiniBlocks measure 1.57 inches square by 1.57 inches tall and are prepunched with a small hole for seeds or cuttings. MM4040 MiniBlocks are sold by a wrapped package of 45 individual blocks (3 strips of 15) and by the case of 2,250 individual MiniBlocks (150 strips of 15).

MM5040 MiniBlocks measure 1.97 inches square by 1.57 inches tall and are also prepunched. MM5040 MiniBlocks are sold by a wrapped package of 24 individual blocks and by the case of 1,440 individual cubes.
Order #ROC4040
Grodan Stonewool
MM4040 MiniBlocks
3 Strips of 15 Blocks
45 Blocks
8.95

qty:  
Order #ROC4040C
Grodan Stonewool
MM4040 MiniBlocks
Case of 150 Strips
2,250 Blocks
329.00

qty:  
Order #ROCMM5040
Grodan Stonewool
MM5040 MiniBlocks
2 Strips of 12 Blocks
24 Blocks
6.95

qty:  
Order #ROCMM5040C
Grodan Stonewool
MM5040 MiniBlocks
Case of 120 Strips
1,440 Blocks
329.00

qty:  

Grodan® Stonewool
Macro Plugs
Macroplugs are round and come with a pre-cut slit to facilitate easy insertion of cuttings for propagation.

Once the cutting has been stuck in the plug slit, simply place the plug in a standard squared-holed
10 X 20 cell insert.
Grodan Stonewool Macro Plugs
Grodan Macro Plugs are available in bags of 33 or in cases of 1,650 individual plugs. Macro Plugs measure 1.5 inches in diameter and approximately 1.5 inches tall and are an extremely easy to use and efficient media for cuttings.
Order #ROCPLUREF
Grodan Stonewool
Macro Plugs
Bag of 33 Plugs
8.95

qty:  
Order #ROCPLUREFC
Grodan Stonewool
Macro Plugs
Case of 1650 Plugs
299.00

qty:  

Rockwool Blocks for Growing
Grodan® Stonewool
Growing Blocks
Agro Dynamics offers a large assortment of stonewool growing blocks for hydroponic vegetable and flower production.
Grodan Stonewool Growing Blocks
Growing blocks are used for direct sowing or "blocking on" of Mini and Multiblock grown plants. Blocks are available with and without pre-cut holes that will accomodate MiniBlock and Macro Plug propagation stonewool (above).

Grodan recommends you choose DM 8 or DM 10 if you are using the growing block on an ebb/flood table, or if you are potting the Grodan block up in LECA clay pellets or perlite.
Root system in Grodan Stonewool Growing Block
The larger blocks are heavier and will give your plants a good weight anchor, so they do not fall over. These blocks also hold more water, so your plants have a water reservoir to fall back on if your pump or drippers fail. Grodan recommends the HUGO block if you like to grow your plant to full maturity in a block.

Grodan® Stonewool 3-Inch Growing Blocks
Stonewool 3-Inch Growing Blocks measure approximately 3 inches square and are available in 2 depths, 2.56 inches tall (DU4 & DM4) and 3.94 inches tall (DM56). 2.56 inch tall blocks available with (DM4) and without (DU4) transplanting holes.

DU4 Growing Blocks measure 2.95 inches square by 2.56 inches tall and have no prepunched hole for Mini or MultiBlocks. Sold either by the wrapped strip of 8 individual blocks or by the case of 48 strips, for a total of 384 individual Growing Blocks.

DM4 Growing Blocks measure 2.95 inches square by 2.56 inches tall and are prepunched with a hole that comfortably accomodates either MM4040 MiniBlocks or AO3640 MultiBlocks. Sold either by the wrapped strip of 8 individual blocks or by the case of 48 strips, for a total of 384 individual Growing Blocks.

DM56 Growing Blocks measure 2.95 inches square by 3.94 inches tall and are prepunched with a hole that comfortably accomodates either MM4040 MiniBlocks or AO3640 MultiBlocks. Sold either by the wrapped strip of 8 individual blocks or by the case of 32 strips, for a total of 256 individual Growing Blocks.
Order #ROCDU4
Grodan Stonewool
DU4 Growing Blocks
NO HOLE
Strip of 8 Blocks
5.95

qty:  
Order #ROCDU4C
Grodan Stonewool
DU4 Growing Blocks
NO HOLE
Case of 48 Strips
384 Blocks
214.00

qty:  
Order #ROCDM4
Grodan Stonewool
DM4 Growing Blocks
WITH HOLE
Strip of 8 Blocks
5.95

qty:  
Order #RWDM4C
Grodan Stonewool
DM4 Growing Blocks
WITH HOLE
Case of 48 Strips
384 Blocks
214.00

qty:  
Order #ROCDM5
Grodan Stonewool
DM56 Growing Blocks
WITH HOLE
Strip of 8 Blocks
8.95

qty:  
Order #ROCDM5C
Grodan Stonewool
DM56 Growing Blocks
WITH HOLE
Case of 32 Strips
256 Blocks
214.00

qty:  

Grodan® Stonewool 4-Inch Growing Blocks
Stonewool 4 Inch Growing Blocks measure approximately 4 inches square and are available in 3 depths, 2.56 inches tall (DM65). 3.15 inches tall (DM8, DU8) and 3.94 inches tall (DM10). The 3.15 inch tall blocks are available with (DM8) or without (DU8) transplanting holes.

DM65 Growing Blocks measure 3.94 inches square by 2.56 inches tall and are prepunched with a hole that comfortably accomodates either MM4040 MiniBlocks or AO3640 MultiBlocks. Sold either by the wrapped strip of 6 individual blocks or by the case of 36 strips, for a total of 216 individual Growing Blocks.

DU8 Growing Blocks measure 3.94 inches square by 3.15 inches tall and have no prepunched hole. Sold either by the wrapped strip of 6 individual blocks or by the case of 30 strips, for a total of 180 individual Growing Blocks.

DM8 Growing Blocks measure 3.94 inches square by 3.15 inches tall and are prepunched with a hole that comfortably accomodates either MM4040 MiniBlocks or AO3640 MultiBlocks. Sold either by the wrapped strip of 6 individual blocks or by the case of 30 strips, for a total of 180 individual Growing Blocks.

DM10 Growing Blocks measure 3.94 inches square by 3.94 inches tall and are prepunched with a hole that comfortably accomodates either MM4040 MiniBlocks or AO3640 MultiBlocks. Sold either by the wrapped strip of 6 individual blocks or by the case of 24 strips, for a total of 144 individual Growing Blocks.
Order #ROCDM6
Grodan Stonewool
DM65 Growing Blocks
WITH HOLE
Strip of 6 Blocks
5.95

qty:  
Order #ROCDM6C
Grodan Stonewool
DM65 Growing Blocks
WITH HOLE
Case of 36 Strips
216 Blocks
169.00

qty:  
Order #ROCDU8
Grodan Stonewool
DU8 Growing Blocks
NO HOLE
Strip of 6 Blocks
7.95

qty:  
Order #ROCDU8C
Grodan Stonewool
DU8 Growing Blocks
NO HOLE
Case of 30 Strips
180 Blocks
189.00

qty:  
Order #ROCDM8
Grodan Stonewool
DM8 Growing Blocks
WITH HOLE
Strip of 6 Blocks
7.95

qty:  
Order #ROCDM8C
Grodan
Stonewool
DM8 Growing Blocks
WITH HOLE
Case of 30 Strips
180 Blocks
189.00

qty:  
Order #ROCDM10
Grodan Stonewool
DM10 Growing Blocks
WITH HOLE
Strip of 6 Blocks
8.95

qty:  
Order #ROCDM10C
Grodan Stonewool
DM10 Growing Blocks
WITH HOLE
Case of 24 Strips
144 Blocks
184.00

qty:  

Grodan® Stonewool
6-Inch HUGO Growing Blocks
The HUGO block is what you want if you like to grow your plant to full size in a rockwool block. This block holds an incredible amount of water, so start by thoroughly saturating once per week.
Grodan Stonewool HUGO 6 Inch Growing Blocks
HUGO Growing Blocks measure 6.00 inches square by 5.80 inches tall and are prepunched with a hole that comfortably accomodates either MM4040 MiniBlocks or AO3640 MultiBlocks. Sold either by the individual block or by the case of 48 individual Growing Blocks.
Order #ROCHUGO
Grodan Stonewool
HUGO Growing Block
WITH HOLE
Each Block
3.49

qty:  
Order #ROCHUGOC
Grodan Stonewool
HUGO Growing Block
WITH HOLE
Case of 48 Blocks
149.00

qty:  

Rockwool Slabs for Growing
Grodan® Stonewool
Expert Growing Slabs

Grodan® growing slabs come wrapped in UV resistant polyethylene sleeves for ease of use. The special structure of Expert vegetable slabs provides a uniform environment allowing plant roots to rapidly explore all the available growing volume for a quick start. Water and nutrient distribution is also more uniform and provides a larger effective rooting volume than previously possible.

Grodan Expert vegetable slabs come in two sizes. The 6 inch wide slab is suitable for crops such as tomato, pepper and eggplant. The 8 inch wide slab is used for more water hungry crops such as cucumbers. Both sizes feature vertical fibers for fast draining of excess water.
Grodan Stonewool Expert Growing Slabs

Grodan Stonewool Expert Growing Slabs
Expert 15/75 Growing Slabs measure 6 inches wide by 36 inches long by 3 inches tall. Expert 20/75 Growing Slabs measure 8 inches wide by 36 inches long by 3 inches tall. Available by the individual slab or by the case of 12 slabs.
Order #ROC6IN
Grodan Stonewool
Expert 15/75 Growing Slab
Each Slab
7.95

qty:  
Order #ROC6INC
Grodan Stonewool
Expert 15/75 Growing Slab
Case of 12 Slabs
74.00

qty:  
Order #ROC8IN
Grodan Stonewool
Expert 20/75 Growing Slab
Each Slab
9.95

qty:  
Order #ROC8INC
Grodan Stonewool
Expert 20/75 Growing Slab
Case of 12 Slabs
99.00

qty:  

Rockwool Cubes for Growing
Grodan Stonewool
Growcubes

Grodan Growcube is a cube - like loose substrate, made of stonewool. Growcubes provide a perfect water buffer, with a very high water holding capacity. The water content in a pot of Growcubes is at a maximum of 85%. Air space is always present.
Grodan Stonewool Growcubes
Not only are Growcubes lightweight, they also provide large air-spaces, since there are always open spaces around the cubes. Growcubes maintain their shape throughout cultivation. Due to these unique features the substrate typically has an air-space volume of 30%, depending on the size and shape of the pot. This means that long irrigation cycles are possible without causing lack of oxygen to the roots. Root system of plant grown in Grodan Stonewool Growcube
Thanks to these qualities, Growcubes are an ideal medium for container cultivation of cut flowers. If desired, Growcubes can be used in a potting machine for added convenience.

Growcubes are absolutely free of disease, salts and weed seeds. This means that the grower knows he starts off with a clean worry-free medium, ready for hygienic production.

The homogeneous, airy structure of the Growcubes is particularly beneficial for complete and thorough rooting.
Grodan Stonewool Growcube
The root system of every plant has complete access to the entire rooting volume of the substrate. Growcubes have no Cation Exchange Capacity (CEC) sot he grower can take advantage of a nutritional program specifically tailored the the crop being grown. Having the freedom to determine the nutritional regime of the crop coupled with a large water buffer equips the grower with the tools necessary to optimize production. Growcubes are suitable for extended cultivation in pots or containers for several years. Because the optimum air and water balance (always having sufficient oxygen for the roots), large irrigation cycles are possible even in middle of winter.

Small bag contains 0.9 CF of material that will fill 10 one gallon pots. Large bag contains 2.0 CF and will fill 23 one gallon pots. Also available in the case of three (3) 2.0 CF bags.
Order #ROOCGROWMED
Grodan Stonewool
Growcubes
0.9CF Bag
21.95

qty:  
Order #ROOCGROWCUBES
Grodan Stonewool
Growcubes
2.0CF Bag
39.95

qty:  
Order #ROOCGROWCUBESC
Grodan Stonewool
Growcubes
2.0CF Bag
Case of 3 Bags
109.00

qty:  

Rockwool Conditioning Solution
Europonic Rockwool Conditioning Solution
Europonic
Rockwool Conditioning Solution

Specially designed to pre-condition rockwool and stonewool products, which are naturally alkaline from the factory and should be conditioned for 24 hours prior to use for fastest rockwool productivity.

Stabilizes and adjusts stonewool for maxiumum nutrient uptake. A blend of pH controls and minerals for conditioning your rockwool before starting seed, clones or transplants. Use three ounces of Europonic Rockwool Conditioning Solution per gallon of water and mix thoroughly. Saturate dry rockwool with this mixture and let soak overnight.
Order #ROCQT
Europonic
Rockwool Conditioning Solution
32 Ounces
14.95

qty:  
Order #ROCGAL
Europonic
Rockwool Conditioning Solution
Gallon
34.95

qty:  


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