--- product_id: 170254953 title: "Grodan Rockwool Delta GRO Blocks | 4\" Cube - Pack of 6 | + THCity Stakes" brand: "twin canaries liquid volume conversion chart" price: "225.84 DT" currency: TND in_stock: true reviews_count: 8 category: "Twin Canaries Liquid Volume Conversion Chart" url: https://www.desertcart.tn/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6 store_origin: TN region: Tunisia --- # Fits 1.5" starter plugs perfectly Grooved base for optimal drainage 4" x 4" x 4" precision cube Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + THCity Stakes **Brand:** twin canaries liquid volume conversion chart **Price:** 225.84 DT **Availability:** βœ… In Stock ## Summary > 🌿 Grow smarter, not harder β€” the pro’s choice for flawless root zones! ## Quick Answers - **What is this?** Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + THCity Stakes by twin canaries liquid volume conversion chart - **How much does it cost?** 225.84 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6) ## Best For - twin canaries liquid volume conversion chart enthusiasts ## Why This Product - Trusted twin canaries liquid volume conversion chart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Complete Starter Kit:** Includes 5 THCity stakes for superior plant support and stability. - β€’ **Versatile Indoor Use:** Ideal for indoor gardening with moderate watering needs and organic material composition. - β€’ **Advanced Drainage Design:** Grooved bases prevent waterlogging, ensuring roots never suffer from 'wet feet'. - β€’ **Premium Rockwool Quality:** Genuine Grodan rockwool guarantees superior aeration and moisture retention for thriving plants. - β€’ **Perfectly Sized Growth Cubes:** 4-inch cubic blocks designed for seamless plant development and easy plug insertion. ## Overview Grodan Rockwool Delta GRO Blocks are premium 4-inch cubic rockwool blocks engineered for optimal plant growth. Featuring grooved bases for superior drainage and perfectly sized holes for 1.5-inch starter plugs, these blocks come in a pack of six with 5 THCity stakes included. Designed for indoor use with moderate watering, they provide an organic, high-quality growing medium trusted by professionals. ## Description Product description Grodan GRO-BLOCK Improved Grodan partnered with the Wageningen University and Research Facility and top growers from all over North America to determine the optimal stone wool substrate and irrigation strategies for indoor and greenhouse speciality crops. The result of this scientific rigor is Grodan Gro-Blocks Improved with our 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. These benefits translate to higher yields, improved quality, less water and nutrient usage, and reduced sensitivity of the crop to diseases. Key features 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. How To Use: Soaking and Irrigation How To: Transplanting Review: Grodan is top quality rockwool - These cubes came packaged well in a plastic wrap. These are genuine Grodam rockwool cubes and are very high quality! Review: Great for the price - Not much to say, works great for the price. Only needed 4 so used one of the extras to create a plug for the center. ## Features - Each Block is 4" x 4" x 4" with a hole at the top - Gro-block holes are the perfect size for any 1.5" Starter plug or macroplug - Plants can be fully grown in these gro-blocks - The bases of the gro-blocks are grooved to promote drainage and to avoid "wet feet" - Comes with 5 THCity Stakes ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0812XYTKN | | Best Sellers Rank | #47,802 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #471 in Plant Cages & Supports #1,240 in Garden Fertilizers | | Brand | Twin Canaries Liquid Volume Conversion Chart | | Brand Name | Twin Canaries Liquid Volume Conversion Chart | | Color | Brown | | Customer Reviews | 4.6 out of 5 stars 444 Reviews | | Indoor Outdoor Usage | Indoor | | Indoor/Outdoor Usage | Indoor | | Manufacturer | Twin Canaries Liquid Volume Conversion Chart | | Material Feature | Natural | | Material Features | Natural | | Moisture Needs | Moderate Watering | | Number of Pieces | 6 | | Other Special Features of the Product | organic | | Product Care Instructions | Water | | Soil Type | Sandy Soil | | Special Feature | organic | | Sunlight Exposure | Partial Sun | | Unit Count | 6.0 Count | ## Product Details - **Brand:** Twin Canaries Liquid Volume Conversion Chart - **Color:** Brown - **Indoor/Outdoor Usage:** Indoor - **Material Feature:** Natural - **Moisture Needs:** Moderate Watering - **Product Care Instructions:** Water - **Soil Type:** Sandy Soil - **Special Feature:** organic - **Sunlight Exposure:** Partial Sun - **Unit Count:** 6.0 Count ## Images ![Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + THCity Stakes - Image 1](https://m.media-amazon.com/images/I/71gndqI0PXL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Grodan is top quality rockwool *by J***S on March 25, 2024* These cubes came packaged well in a plastic wrap. These are genuine Grodam rockwool cubes and are very high quality! ### ⭐⭐⭐⭐⭐ Great for the price *by D***R on January 3, 2025* Not much to say, works great for the price. Only needed 4 so used one of the extras to create a plug for the center. ### ⭐⭐⭐⭐⭐ Great *by T***S on October 11, 2025* Perfect ## Frequently Bought Together - Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + Twin Canaries Chart - Grodan Rockwool Starter Mini-Blocks | 1.5" Blocks - Pack of 45 | + Twin Canaries Chart - General Hydroponics Rapid Rooter, Starter Plug for Seeds or Cuttings, Great for Soil or Hydroponics Growing System, 50 Plugs --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6](https://www.desertcart.tn/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-07*