---
product_id: 743379855
title: "Grodan Rockwool Delta GRO Blocks | 4\" Cube - Pack of 6 | +"
brand: "twin canaries liquid volume conversion chart"
price: "€ 37.18"
currency: EUR
in_stock: false
category: "Twin Canaries Liquid Volume Conversion Chart"
url: https://www.desertcart.gr/products/743379855-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6
store_origin: GR
region: Greece
---

# Grooved base for optimal drainage 4" x 4" x 4" precision cube 1.5" starter plug compatible hole Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | +

**Brand:** twin canaries liquid volume conversion chart
**Price:** € 37.18
**Availability:** ❌ Out of Stock

## Summary

> 🌱 Grow smarter, not harder — the ultimate hydroponic block for next-level cultivation!

## 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?** € 37.18 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/743379855-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

- • **Plug & Play Planting:** Holes fit any 1.5" starter or macroplug for seamless transplanting.
- • **Drainage-Optimized Design:** Grooved bases prevent waterlogging and root rot—no more 'wet feet'.
- • **All-in-One Growth Solution:** Supports full plant growth from seedling to harvest in one block.
- • **Perfectly Sized Growth Cubes:** Each 4" cube is engineered for ideal root space and stability.
- • **Bonus Conversion Chart Included:** Twin Canaries Liquid Volume Chart helps you master nutrient dosing like a pro.

## Overview

Twin Canaries Grodan Rockwool Delta GRO Blocks are 4-inch cubic stone wool blocks designed for hydroponic growing. Each block features a perfectly sized hole for 1.5-inch starter plugs, grooved bases to ensure proper drainage, and supports full plant growth. The pack of 6 includes a liquid volume conversion chart to optimize nutrient management, making it an essential tool for professional and hobbyist growers alike.

## Description

Grodan makes a variety of stone wool products. You can view the product as a fancy form of container for your plant. The container (or the stone wool) holds the perfect ratio of water and air that your plant needs. The fibrous structure of the stone wool gives your plant something to anchor in. The container or the stone wool does not provide any food for your plant. You therefore use plant food in the water each time you water.

## 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 |
|---------------|-------|
| ASIN | B0812XYTKN |
| Brand | Twin Canaries Liquid Volume Conversion Chart |
| Country of Publication | USA |
| Customer Reviews | 4.6 4.6 out of 5 stars (429) |
| Number of Pieces | 6 |
| Unit Count | 6.00 Count |

## Product Details

- **Brand:** Twin Canaries Liquid Volume Conversion Chart
- **Net Quantity:** 6.00 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/71gndqI0PXL.jpg)
![Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + - Image 2](https://m.media-amazon.com/images/I/41fBTB8cIFL.jpg)
![Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + - Image 3](https://m.media-amazon.com/images/I/41q0CkT13wL.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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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-09-29*