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

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

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SKU: RW286613

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Grodan Improved Gro-Block Jumbo (6” x 6” x 4”) is a premium stone wool substrate designed for precision irrigation and optimal plant growth. Developed in collaboration with Wageningen University and top growers, these blocks feature an advanced wetting agent for uniform water content (WC) and electrical conductivity (EC) distribution. Their optimized fibre structure promotes even water absorption, stronger root development, and enhanced nutrient uptake. Ideal for specialty crops, these blocks support vigorous, high-yield plant growth with superior steering capabilities.

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Grodan Improved Gro-Block, Jumbo 6" x 6" x 4"

  • 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 Improved Gro-Block Jumbo 6" x 6" x 4" is a next-generation stone wool substrate designed to enhance plant growth and nutrient efficiency. Developed through extensive research with leading growers, these blocks feature an advanced fiber structure that ensures even water distribution and stable electrical conductivity (EC). The improved wetting technology allows for greater control over irrigation and root zone conditions, fostering healthier root development. Ideal for precision growing, these blocks support high-yield crops with optimized water and nutrient uptake.

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

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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Why Choose Us

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 sets Grodan Improved Gro-Block Jumbo apart from other growing media?
Grodan Improved Gro-Block Jumbo features an optimized fiber structure and enhanced wetting technology, ensuring consistent moisture retention, better root penetration, and improved nutrient uptake.
How does the Advanced Wetting Agent improve plant growth?
The Advanced Wetting Agent in these blocks promotes uniform water distribution, preventing dry spots and ensuring stable electrical conductivity (EC) for balanced nutrient absorption.
Are Grodan Improved Gro-Blocks suitable for all growth stages?
Yes, they support plant growth at all stages, from propagation to flowering, ensuring strong root systems and vigorous plant development.
How do these blocks assist with water and nutrient management?
Their optimized design allows precise control over water content and EC levels, reducing runoff and ensuring plants receive an ideal balance of nutrients.
Are Grodan Improved Gro-Blocks environmentally sustainable?
Yes, Grodan’s stone wool is recyclable and promotes water efficiency, helping growers reduce their environmental footprint while maximizing crop yields.
How should I prepare Grodan Improved Gro-Blocks before use?
Before planting, pre-soak the blocks with a balanced nutrient solution to establish an optimal pH level and moisture content for seedlings or transplants.
Can Grodan Improved Gro-Blocks be used with various growing systems?
Yes, they are highly versatile and can be used in hydroponic, aeroponic, drip irrigation, and flood-and-drain systems, providing optimal root support and water management.

Specifications

Grodan
Brand Grodan
Product Name Grodan Improved Gro-Block, Jumbo 6" x 6" x 4"
Product Type Stone Wool Growing Medium
Material Stone Wool (Rockwool)
Block Dimensions (Each) 6" x 6" x 4"
Package Dimensions 16.0"L x 24.0"W x 24.0"H
Case Quantity 64 Blocks per Case
Shipping Weight 23.5 lbs.
Barcode (UPC-A) 774783493006
Water Holding Capacity High, with Uniform Water Distribution
pH Neutral Yes, Requires Pre-Conditioning

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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