Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart

Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart

$23.79
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Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
  • Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart
Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart

Redrock 4 inch Rockwool Cubes – 4" x 4" Stone Wool Starter Blocks with 42/40 Hole | 6-Pack | for Hydroponics & Indoor Growing | Includes Twin Canaries Chart

$23.79

About This

  • Rockwool Cube for Hydroponics & Propagation – This 4” x 4” stone wool cube is engineered for early-stage growth and propagation in hydroponic systems, perfect for leafy greens, herbs, and fruiting crops.
  • Pre-Formed 42/40 Planting Hole – Each block includes a standard 42/40 mm hole designed for clean and easy transplanting of starter plugs or cuttings.
  • Inert Stone Wool Composition – Manufactured from dense, U.S.-sourced rock wool for a sterile, soil-free environment that supports consistent moisture and air balance.
  • Efficient Moisture Retention – These rock wool planting cubes retain water evenly while allowing proper dry-back and air exchange, helping maintain healthy root zone conditions.
  • Compatible with All Major Systems – Ideal for use in ebb & flow, drip irrigation, and other hydroponic setups—trusted by greenhouse operators, indoor growers, and commercial cultivators.

Overview

  • Material : Stone Wool
  • Color : Red
  • Special Feature : organic
  • Style : Rustic
  • Planter Form : Plant Pot

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