Roxul Usa Grodan Gro-Block Improved GR6.5 Small (4x4x2.6) w/Hole

Roxul Usa Grodan Gro-Block Improved GR6.5 Small (4x4x2.6) w/Hole

SKU: GRD290153
$1,616.99
Available to Order
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Quick answer

Roxul Usa Grodan Gro-Block Improved GR6.5 Small (4x4x2.6) w/Hole should be matched to your growing media, water source, crop stage, feeding style, and pH/EC monitoring plan.

Best fitGrowers building a nutrient program around a specific media type, water source, and crop stage.
Check before orderingConfirm the listed SKU, dimensions, and ship weight match the version you want before checkout.
Grower tipStart from the label or feed chart, measure pH and EC, and increase strength only after plants show they are handling it.

Shopping guidance from Toledo Indoor Garden. Prices, availability, shipping rates, weights, and dimensions are verified during checkout.

Description

SMALL - GR6.5 - 4IN X 4IN X 2.6IN - PRE-CUT HOLE - LOOSE ON PALLET - Grodan Improved Gro-Blocks utilize advanced hydrophilic technology and optimal density to improve water distribution and promote healthy root development.

Available as loose blocks or in strip format, these blocks feature a groove pattern on the bottom for compatibility with various cultivation systems, enhancing their versatility.

Each block includes a single plug hole, facilitating efficient transplanting of fully rooted Grodan A-OK or Grodan Macro plugs.

Made from stone wool derived from basalt rock, these blocks are lightweight, absorbent, and structurally sound, making them ideal for automated seeding and transplanting processes.

The unique hydrophilic fibers ensure rapid, even water distribution and offer excellent buffer and re-saturation capabilities, while the blocks' homogenous structure guarantees uniform nutrient availability, promoting consistent plant growth.

Stone wool also ensures that no water or nutrients are wasted, and that the material is free from pathogens or unwanted seeds, supporting healthy and productive plant cultivation.

Weight: 322.00 lbs.

  • Genuine Grodan product
  • Brand: Grodan
  • Category: Growing Media > Rockwool Blocks
  • Listed weight: 322.00 lbs
  • Listed dimensions: 2.6 x 4 x 2 in
  • Review product photos, selected option, specifications, and label directions before ordering

Specifications

SKUGRD290153
BrandGrodan
UPC774783494942
Weight322.00 lbs
Dimensions2.6 x 4 x 2 in
Sold Aseach
MaterialStone Wool (Basalt Rock Fiber)
ManufacturerGrodan (ROCKWOOL Group)
PH~6.0 (neutral / inert)
ECInert — does not contribute EC
Pathogen-FreeYes — sterile manufacturing process
ReusableSingle-use recommended
Block Size4" x 4" x 2.6" (10 x 10 x 6.5 cm)
ModelGro-Block Improved GR6.5 (Small 4")
Volume (Per Block)41.6 cu in (550 mL)
Saturated Weight (Per Block)~550g (19.4 oz)
Water Holding Capacity~80% at saturation
Air Content~20% at saturation
Fiber OrientationVertical (improved drainage)
Product TypeVegetative Growth Block
Wetting AgentAdvanced Hydrophilic (Improved)
Compatible PlugsGrodan A-OK 1.5" or Macro Plugs
Wetting MethodSubmerge 10-15 min or overhead water 6-8 passes
ShippingFreight required

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