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Grodan Gro - Block Improved Jumbo, 6" x 6" x 4" w/Hole - Green Thumb Depot
Grodan Gro-Block Improved Rock Wool Jumbo, 6" x 6" x 4" w/Hole

Grodan Gro-Block Improved Rock Wool Jumbo, 6" x 6" x 4" w/Hole

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SKU: RW327710

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Grodan Gro-Block Improved Jumbo (6” x 6” x 4”) is a high-performance stone wool substrate designed for optimal plant growth. Developed through research with Wageningen University and top growers, these blocks feature an advanced wetting agent for uniform water distribution and enhanced root development. With improved fibre structure, they ensure consistent water content (WC) and electrical conductivity (EC), promoting robust plant growth. Ideal for hydroponic and specialty crops, these blocks maximize nutrient uptake, ensuring healthier and more productive yields.

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Grodan Gro-Block Improved Jumbo, 6" x 6" x 4" w/Hole

  • Optimized Water & Nutrient Retention: Designed with an advanced fiber structure, these Gro-Blocks ensure even water content (WC) and electrical conductivity (EC) distribution for uniform plant growth.
  • Enhanced Root Development: The improved substrate structure promotes better aeration and water absorption, leading to a stronger root system with greater nutrient uptake capabilities.
  • Superior Crop Steering: Provides precise control over irrigation strategies, allowing growers to steer crops toward desired growth outcomes for higher yields and improved plant health.
  • Scientifically Engineered Performance: Developed in collaboration with Wageningen University and top growers, ensuring industry-leading stone wool technology for specialty crop cultivation.

Product Overview

Specifications

What's Included?

Warranty Policy

Product Overview

The Grodan Gro-Block Improved Jumbo 6" x 6" x 4" w/Hole is an advanced stone wool substrate engineered for optimal plant growth. Developed in collaboration with leading researchers and growers, these blocks feature an enhanced fiber structure that ensures uniform water content (WC) and electrical conductivity (EC) distribution. Designed for precision irrigation and nutrient management, they promote strong root development and efficient crop steering. Ideal for commercial and specialty growers, they provide consistent performance for healthier, more productive plants.

Why Choose Grodan Gro-Block Improved Jumbo, 6" x 6" x 4" w/Hole?

The Grodan Gro-Block Improved Jumbo is designed for growers seeking superior control over their substrate. Featuring Advanced Wetting Technology, it ensures even water and nutrient distribution for consistent plant development. With optimized fiber structure, improved re-wettability, and better EC control, these blocks promote healthier root systems and more efficient water usage. Whether you're steering crops vegetatively or generatively, this improved block enhances growth potential, leading to higher yields and sustainable cultivation.

Enhanced Root Development

Uniform Water & EC Distribution

Improved Re-Wettability

Supports Vigorous Growth

Why Choose Grodan?

Choosing Grodan means leveraging scientifically developed stone wool growing media that optimize plant growth and resource efficiency. With a commitment to precision growing, Grodan products ensure uniform water and nutrient distribution, promoting stronger root development and higher yields. Engineered for sustainability and consistency, our substrates support both small-scale and commercial growers by enhancing crop quality and reducing water and fertilizer usage. Whether for propagation or full-cycle cultivation, Grodan offers innovative solutions trusted by growers worldwide.

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At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.

wetanddry
Excellent 4.8 out of 5 based on 1,247 reviews
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Reviewer
Jim D
Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I’ll definitely order from them again
Reviewer
Glenn Appleton
The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we’re starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Reviewer
Freddie
Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Reviewer
Kar
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FAQ Section

What makes Grodan Gro-Block Improved Jumbo different from other growing media?
Grodan Gro-Block Improved Jumbo features an advanced fiber structure that ensures even water retention, better root development, and improved nutrient uptake, making it a superior choice for hydroponic growers.
How does the Advanced Wetting Agent benefit my plants?
The Advanced Wetting Agent in Grodan Gro-Blocks ensures uniform water distribution throughout the block, eliminating dry spots and allowing for more consistent growth and nutrient absorption.
Is Grodan Gro-Block Improved Jumbo suitable for all plant stages?
Yes, these blocks are ideal for propagation, vegetative, and flowering stages, offering superior root support and water retention for consistent plant development.
How do Grodan Gro-Blocks help with water and nutrient management?
The blocks allow for precise control over water content and electrical conductivity (EC), ensuring that plants receive an optimal balance of water and nutrients without excess waste.
Are Grodan Gro-Blocks environmentally friendly?
Yes, Grodan stone wool is sustainable and recyclable, helping growers reduce water and fertilizer use while maintaining high yields.
How should I prepare Grodan Gro-Blocks before planting?
Before use, saturate the blocks with a properly balanced nutrient solution at the desired pH level, allowing them to reach optimal moisture levels for planting.
Can Grodan Gro-Blocks be used in different growing systems?
Yes, they are versatile and work well in hydroponic, aeroponic, and drip irrigation systems, providing excellent root support and moisture control.

Specifications

Grodan
Brand Grodan
Product Type Gro-Block Improved Jumbo with Pre-Drilled Hole
Material Stone Wool (Rockwool)
Block Dimensions 6"L x 6"W x 4"H
Case Quantity 64 Blocks per Case
Pallet Quantity 704 Blocks per Pallet
Weight (Case) 24 lbs.
Weight (Pallet) 149.24 lbs.
Water Retention Advanced Wetting Agent for Uniform Moisture Distribution
EC & WC Control Improved Steering Capabilities for Precise Crop Management
Compatibility Ideal for Hydroponic, Drip, Ebb & Flow, and Aeroponic Systems
Root Zone Optimization Even Water Content (WC) & Electrical Conductivity (EC) for Healthy Root Growth
Reusability Designed for Multi-Crop Use with Proper Sterilization
Shipping Dimensions 48.0"L x 48.0"W x 52.0"H (Pallet)
Lead Time Ships in 1-2 Business Days
Shipping Restrictions Limited to the Continental US (Excludes AK, HI, MT)
Barcodes 774783500650 (UPC-A)
Certification Environmentally Friendly & Sustainable

Items in the box

64 Gro-Block Improved Jumbo (6" x 6" x 4")

Optimized Water Retention & Drainage

Eco-Friendly & Recyclable

Warranty Policy

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