---
product_id: 7170895
title: "Grodan Rockwool Cubes (4 X 4 X 4 Inches) 6 Pack With Holes"
brand: "grodan"
price: "€ 64.33"
currency: EUR
in_stock: true
reviews_count: 8
category: "Grodan"
url: https://www.desertcart.fi/products/7170895-grodan-rockwool-cubes-4-x-4-x-4-inches-6
store_origin: FI
region: Finland
---

# 8-hour conditioning soak for perfect pH balance 20% air space for optimal root oxygenation Inorganic spun molten rock base Grodan Rockwool Cubes (4 X 4 X 4 Inches) 6 Pack With Holes

**Brand:** grodan
**Price:** € 64.33
**Availability:** ✅ In Stock

## Summary

> 🌱 Root like a pro with Grodan’s breathable rockwool cubes!

## Quick Answers

- **What is this?** Grodan Rockwool Cubes (4 X 4 X 4 Inches) 6 Pack With Holes by grodan
- **How much does it cost?** € 64.33 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/7170895-grodan-rockwool-cubes-4-x-4-x-4-inches-6)

## Best For

- grodan enthusiasts

## Why This Product

- Trusted grodan brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Nutrient-Neutral Base:** No nutrients included—full control over your feeding regimen
- • **Custom pH Conditioning:** Soak for 8 hours to achieve ideal pH 5.0-5.5 for cuttings
- • **Sterile Rockwool Matrix:** Pure, inorganic medium ensures contamination-free rooting
- • **Optimal Root Oxygenation:** 20% air space when saturated promotes vigorous root growth
- • **Trusted by Hydroponic Pros:** Top choice for rooting cuttings with proven reliability

## Overview

Grodan Rockwool Cubes are a sterile, inorganic growing medium made from spun molten rock, designed specifically for superior rooting of cuttings. Featuring 20% air space when saturated, these cubes optimize oxygen flow to roots, enhancing growth. They require an 8-hour conditioning soak in pH 5.0-5.5 water before use, allowing precise pH control. Nutrient-free and trusted by hydroponic growers, these cubes provide a clean, customizable foundation for your plants’ success.

## Description

Rockwool is an inorganic and sterile growing medium made from spun molten rock. A superior medium for rooting cuttings, rockwool provides 20% air space when saturated, and does not contain nutrients. It is recommended that rockwool be conditioned by soaking for eight hours in a pH 5.0-5.5 and then rinsing with pH 7.0 water. Water daily.

Review: Five Stars - Great price, for a great block, from a great company.
Review: worked ok - having some issues with growing success. some dead plants. but, new at whole process of hydro, product does well, and was as advertised

## Features

- An inorganic and sterile growing medium made from spun molten rock
- A superior medium for rooting cuttings
- Provides 20% air space when saturated
- Does not contain nutrients
- Condition by soaking for eight hours

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IXNQIM |
| Best Sellers Rank | #718,643 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #2,577 in Garden Soil |
| Brand | Grodan |
| Customer Reviews | 4.1 4.1 out of 5 stars (67) |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Weight | 12 ounces |
| Manufacturer | Grodan |
| Number of Items | 1 |
| Package Dimensions | 23.5 x 4 x 4 inches |
| Specific Uses For Product | Rooting |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Grodan
- **Item Form:** Liquid
- **Item Weight:** 0.75 Pounds
- **Manufacturer:** Grodan
- **Specific Uses For Product:** Rooting

## Images

![Grodan Rockwool Cubes (4 X 4 X 4 Inches) 6 Pack With Holes - Image 1](https://m.media-amazon.com/images/I/21AGE9tnvZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Five Stars
*by C***Y on May 19, 2016*

Great price, for a great block, from a great company.

### ⭐⭐⭐ worked ok
*by R***N on February 1, 2013*

having some issues with growing success. some dead plants. but, new at whole process of hydro, product does well, and was as advertised

### ⭐⭐⭐⭐⭐ Best match for small Hydroponic systems
*by T***E on March 20, 2015*

The perfect medium for mid-sized plants grown in a hydroponics system. Root systems love rockwool cubes, and if used with Grodan seedling cubes (1-1/2" x 1-1/2 " ) the combo cannot be beaten. Convenience, economy, and practicality are all combined within the Grodan Rockwool cubes.

## Frequently Bought Together

- Grodan Rockwool Cubes (4 X 4 X 4 Inches) 6 Pack With Holes
- Grodan Rockwool 1.5" x 1.5" x 1.5" Mini Blocks Pack of 45
- HydroDynamics Clonex Rooting Compound, 100 ml

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**Shop now:** [https://www.desertcart.fi/products/7170895-grodan-rockwool-cubes-4-x-4-x-4-inches-6](https://www.desertcart.fi/products/7170895-grodan-rockwool-cubes-4-x-4-x-4-inches-6)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-12*