90x15x7.5cm - 36-Inch x 6-Inch x 3-Inch

RedRock Grow Slab - 90x15x7.5cm

Commercial grade stone wool grow slabs manufactured from high-grade US made raw material.
  • Stonewool grow slabs sourced and manufactured in North America.
  • Wetting agent ensures nutrients are immediately plant available.
  • High fiber density makes better use of water and fertilizers while allowing dry back.
  • Priced for commercial agriculture production.
  • Sizes available for any crop.
  • Stonewool grow slabs are processed in Canada.
  • This white label product was sold to the largest cultivators in North America for years and is now available to you.
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Moisture Retention

Stone wool has high moisture retention.

Nutrient Content

Holds hydroponic nutrients post hydration.

Oxygen Availability

High-If allowed to drain the material allows for excellent oxygen to roots

pH and EC

High. pH can become very basic pH testing should be done periodically

Durability

High. Does not decompose.

Areas of Use

Hydroponic systems (floor and drain)

Crops

Supports multiple crop types through the entire growth cycle.

Upcycling

Can be sterilised and reused for couple of seasons, or shredded and used as soil conditioner.

REDROCK: Tight-Fit Wrapped Slabs

Custom tailored Tight-Fit film wrap on our slabs ensure better drainage and uniform water movement across the media. Water and plant nutrition are held accessible to the root zone and forced along a straight path through the stonewool to the drainage slit(s). Additionally, we have printed tracking information on every slab to ensure cultivators can check lots for quality and consistency cycle after cycle.

  • Tight-Fit wrappers ensure nutrient rich water is plant accessible.
  • Increased uniformity in water distribution.

Other Stonewool Companies

  • Sloppy wrappers hold water unevenly and interrupt uniform drainage.
  • Increased risk of wrapper tear.
  • Gaps pool free-draining water.
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SELECT GROW MEDIA FOR COMMERCIAL USE

It is common to find propagators moving fresh cuttings into plugs for the initial stage of development. Once rooted plants are transplanted into stone wool grow blocks and then placed ontop of grow slabs to extend root zone development and access to water and nutrients. Selecting the correct substrate for your crop depends on many variables such as size, duration, density, and more.

SPECIFICATIONS AND PACKAGING

RedRock Grow Slab - 90x15x7.5cm - 36-Inch x 6-Inch x 3-Inch (16/Cs) (16 Cs/Plt)

RedRock Grow Slab – 90x15x7.5cm – 36-Inch x 6-Inch x 3-Inch (16/Cs) (16 Cs/Plt)

  • 16/Case
  • 16 Cases/Pallet (192 slabs)
  • 30 Pallets/Container (5,760 slabs)
  • Ok to mix and match sizes

REDROCK BLOCK’S USER GUIDE

  1. RedRock blocks are ultra-durable and made from premium material, but they should still be handled with care; Always keep mineral wool dry until use.
  2. Saturate plugs by spraying with nutrient solution or submerging them for about one minute. Squeeze gently or let them drain for a few seconds before placing them onto slabs.
  3. Transplant starter plugs into the blocks’ pre-drilled holes.
  4. As your fertigation system circulates nutrients and water to your plants, RedRock’s specialized wetting agent will deliver it evenly throughout your plants’ root zone.
Inventory details including item numbers, dimensions, quantity, and unit of measure.
ITEM DIMENSIONS (INCH) SIZE QUANTITY UPM
Material properties table detailing specific characteristics, their definitions or methodologies, and the corresponding values. Properties include density, bond strength, free drainage/water factor or field capacity, and sink time or hydration. Each property's methodology gives insight into how values are determined, like mass per unit of volume for density, or the time it takes for a block to sink in water to measure hydration.
PROPERTY Definition/methodology Definition VALUE
Density Mass per unit of volume 4.5 lb/ft³
Free drainage/water factor/field capacity Plugs are fully saturated, then allowed to drain - how much water remains after ten minutes? 90%
Sink time/hydration Plugs are placed dry onto the surface of water and the length of time before the block fully sinks shows how readily the block absorbs water 15 seconds