---
product_id: 170254953
title: "Grodan Rockwool Delta GRO Blocks | 4\" Cube - Pack of 6 | + Twin Canaries Chart"
brand: "twin canaries liquid volume conversion chart"
price: "399 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6
store_origin: DK
region: Denmark
---

# pre-formed holes for starter plugs balanced water & air distribution 4-inch versatile grow blocks Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + Twin Canaries Chart

**Brand:** twin canaries liquid volume conversion chart
**Price:** 399 kr
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your grow game with rock-solid roots and zero soil fuss!

## Quick Answers

- **What is this?** Grodan Rockwool Delta GRO Blocks | 4" Cube - Pack of 6 | + Twin Canaries Chart by twin canaries liquid volume conversion chart
- **How much does it cost?** 399 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/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

- • **Robust Root Support:** 4-inch size ensures superior root stability and nutrient access for medium to large plants.
- • **Organic & Sustainable:** Crafted from natural rockwool, these blocks support eco-friendly, high-performance hydroponics.
- • **Perfect Plug Compatibility:** Pre-formed holes fit A-OK and macro starter plugs like a glove for efficient, clean starts.
- • **Grow Directly, No Soil Needed:** Skip the mess—plant seeds or plugs straight into these standalone blocks for seamless growth.
- • **Optimized Moisture & Aeration:** Engineered fibers balance water retention and airflow to prevent overwatering and boost growth.

## Overview

Grodan Rockwool Delta GRO Blocks are 4-inch hydroponic grow blocks designed for direct planting without soil. Featuring pre-formed holes for starter plugs, they provide superior root stability and balanced moisture and aeration, making them ideal for medium to large plants. This pack of 6 organic blocks supports efficient, clean, and sustainable full-cycle plant growth.

## Description

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

## Features

- Grodan 4" Rockwool Grow Blocks – Versatile hydroponic medium that supports direct planting—start seeds or insert rooted plugs straight into the block for full-cycle growth.
- Grow Directly in the Blocks – Designed to be a standalone growing medium; no additional containers or soil required for many crops.
- Perfect Fit for Starter Plugs – Features pre-formed holes that snugly accommodate A-OK or macro starter plugs for clean, efficient planting.
- Superior Root Stability & Nutrient Access – The 4-inch size offers strong support for medium to large plants, promoting robust root development and efficient nutrient uptake.
- Balanced Water & Air Distribution – Engineered rockwool fibers ensure even moisture retention and aeration, minimizing overwatering risks while maximizing performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Brown |
| Unit Count | 6.00 Count |
| Number of Pieces | 6 |
| Product Care Instructions | Water |
| Soil Type | Sandy Soil |
| Moisture Needs | Moderate Watering |
| Additional Features | organic |

## Product Details

- **Indoor/Outdoor Usage:** Indoor
- **Brand:** Twin Canaries Liquid Volume Conversion Chart
- **Material Feature:** Natural
- **Color:** Brown
- **Special Feature:** organic
- **Sunlight Exposure:** Partial Sun
- **Unit Count:** 6.0 Count
- **Product Care Instructions:** Water
- **Soil Type:** Sandy Soil
- **Moisture Needs:** Moderate Watering

## Images

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

## Available Options

This product comes in different **Size** options.

## 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?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6](https://www.desertcart.dk/products/170254953-grodan-rockwool-delta-gro-blocks-4-cube-pack-of-6)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-25*