RedRock Starter Block PRO, 4" x 4" x 2.5" (Case of 216)
42/40 Hole - 10x10x6.5cm - 4-Inch x 4-Inch x 2.5-Inch

Commercial grade stone wool pro starter blocks sourced and manufactured in North America.

• Our Stone wool starter blocks are made in the USA and processed in Canada
  
• Wetting agent ensures nutrients are immediately plant available
  The high fiber density of the stone wool starter blocks makes better use of water and
• fertilizers while allowing dry back
  
• Our stone wool starter blocks are priced for commercial agriculture production
  
• Sizes available for any crop

 

Moisture
Stone wool starter blocks have high moisture retention.

Nutrient Content
Once treated, stone wool starter blocks will hold nutrient content.

Oxygen Availability
97% when dry but rapidly hydrates. If allowed to drain the stone wool starter blocks allows for excellent oxygen to roots.

pH and EC
Stone wool has neutral pH, but can be controlled.

 

REDROCK: Predictable Water Mobility
RedRock Wool ensures uniform movement of water and nutrients throughout the plug, block, or slab. Our products will wet-up and dry back with predictability so growers can steer crops further than ever before. New tooling and technology blend horizontal and vertical fibers for the most homogenous and predictable water transport to date.

• Eliminates channeling and dry zones.
• Predictable water movement and nutrient availability.
• Water moves horizontally then vertically for full saturation.
  

 

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,

 

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.
   

 

PROPERTY	DEFINITION / METHODOLOGY	VALUE
Density	Mass per unit of volume	5 lb/ft³
Bond Strength	Blocks are pressed with a metal rod until punctured to measure their resistance against punctures/dents	200 lb/ft2
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