✨ Christmas Special: Get 35% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

User-friendly Grodan Improved Gr10 Large 4" X 4" X 4" W/hole - Wrapped Case 24/cs For Home [9mOfVTCI]

$46.99 $150.99 -69%

Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate an

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

User-friendly Grodan Improved Gr10 Large 4" X 4" X 4" W/hole - Wrapped Case 24/cs For Home [9mOfVTCI]

Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/Strip

Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro-Blocks Improved with Grodan’s Advanced Wetting Agent. 

These leading-edge blocks have the optimal fiber structure and physical properties for crop uniformity, more even Water Content (WC) and Electrical Conductivity (EC) distribution throughout the entire block, and the greatest steering capabilities available. Water distribution is more uniform throughout the entire block which is the basis for a well-defined root system with higher capacities for water and nutrient uptake to produce robust and vigorous crops.

New and improved wetting agent and hydrophilic technology greatly enhances the water characteristics of Grodan Gro-Blocks Improved giving even better water distribution over the height of the block. This results in greater plant development and steerability and more efficient use of water and nutrients.

Optimized wool structure allows for faster rooting-in and nutrient solution replenishment, all while the Gro-Block Improved maintains its structure, firmness, and rigidity throughout the growing process.

Case Quantity: 144 Individual Blocks

What Our Customers Say

February 5, 2026

Absolutely no complaints!

I love this. A very, very, very good quality.

- Sylvia Q..

February 5, 2026

Absolutely no complaints!

This is a very solid and a very nice tool.

- Hadley Y..

February 5, 2026

Absolutely no complaints!

A superb gadget that is so very easy to handle.

- Peter Z..

Write a Review

You Might Also Like

Discover more great products from our collection.

Grable

Grable

(873)
$36.99 $118.99 -69%

Copyright 2026 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY