---
product_id: 680704360
title: "Grodan Rockwool Delta GRO Blocks | 4\" Cube - Pack of 6 | +"
brand: "twin canaries liquid volume conversion chart"
price: "$U3702"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/680704360-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6
store_origin: UY
region: Uruguay
---

# perfect hole for 1.5" starter plugs grooved base for optimal drainage 4" precise cube size Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | +

**Brand:** twin canaries liquid volume conversion chart
**Price:** $U3702
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow smarter, not harder — the future of hydroponics starts here!

## Quick Answers

- **What is this?** Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + by twin canaries liquid volume conversion chart
- **How much does it cost?** $U3702 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/680704360-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

- • **Air & Water Balance:** Stone wool structure maintains ideal moisture and aeration for robust roots.
- • **Complete Growth Solution:** Supports full plant growth from seedling to harvest in one block.
- • **Optimized Drainage Design:** Grooved bases prevent waterlogging, eliminating root rot risks.
- • **Starter Plug Compatibility:** Holes perfectly sized for 1.5" plugs, streamlining your planting process.
- • **Precision-Engineered 4" Cubes:** Uniform size ensures consistent plant growth and easy handling.

## Overview

Grodan Rockwool Delta GRO Blocks are 4-inch stone wool cubes designed for hydroponic and soil-less growing. Each block features a perfectly sized hole for 1.5-inch starter plugs and grooved bases to promote drainage and prevent root waterlogging. The fibrous stone wool structure balances water retention and aeration, providing an ideal environment for plants to anchor and thrive from seedling to full maturity.

## Description

Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | +

## 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 Twin Canaries Liquid Volume Conversion Chart

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Package Dimensions | 30 x 19.89 x 10.11 cm; 381 g |
| Manufacturer | Twin Canaries Liquid Volume Conversion Chart |
| ASIN | B0812XYTKN |

## Product Details

- **Brand:** Twin Canaries Liquid Volume Conversion Chart
- **Material features:** Natural
- **Special features:** organic
- **Unit count:** 6.0 count
- **Number of pieces:** 6

## Images

![Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + - Image 1](https://m.media-amazon.com/images/I/71riOuF1x4L.jpg)
![Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + - Image 2](https://m.media-amazon.com/images/I/512YmSnIwqL.jpg)

## 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

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**Shop now:** [https://www.desertcart.uy/products/680704360-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6](https://www.desertcart.uy/products/680704360-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6)

---

*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-23*