---
product_id: 501300759
title: "4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart"
brand: "twin canaries liquid volume conversion chart"
price: "₩132134"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/501300759-4-inch-redrock-rockwool-pro-grow-block-for-hydroponics-6
store_origin: KR
region: South Korea
---

# Optimized water & nutrient use 4-inch cubic precision Proudly USA-made quality 4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart

**Brand:** twin canaries liquid volume conversion chart
**Price:** ₩132134
**Availability:** ✅ In Stock

## Summary

> 🌱 Grow smarter, not harder — the pro’s choice for unstoppable roots!

## Quick Answers

- **What is this?** 4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart by twin canaries liquid volume conversion chart
- **How much does it cost?** ₩132134 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/501300759-4-inch-redrock-rockwool-pro-grow-block-for-hydroponics-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

- • **42/40 Hole Design:** Optimized hole pattern ensures superior aeration and root expansion
- • **Precision 4-Inch Cubes:** Perfectly sized 4x4x4 inch blocks for consistent root development
- • **Water-Wise Fiber Density:** High-density stone wool maximizes water and fertilizer efficiency
- • **Bonus Twin Canaries Chart:** Includes expert liquid volume guide for flawless nutrient management
- • **Commercial-Grade Durability:** Engineered for large-scale agriculture with premium US materials

## Overview

The 4 Inch Redrock Rockwool PRO Grow Block is a premium, US-made stone wool substrate designed for hydroponic and commercial agriculture use. Measuring 4x4x4 inches with a 42/40 hole configuration, it features high fiber density for superior water and nutrient retention while allowing optimal dry back. Each 6-pack includes a Twin Canaries liquid volume conversion chart, empowering growers with precise nutrient management for robust plant development.

## Description

4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart

## Features

- RedRock rockwool grow blocks are made in the USA
- RedRock rockwool grow blocks PRO are priced for commercial agriculture production
- Rockwool has high fiber density makes better use of water and fertilizers while allowing dry back
- Each block measures 4 inch x 4 inch x 4 inch with 42/40 Hole
- Each order comes with a Twin Canaries Chart

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Dimensions | 10.16 x 10.16 x 10.16 cm; 381 g |
| Material type | Stone Wool |
| Capacity | 384 Cubic Inches |
| Moisture needs | Moderate Watering |
| Sunlight exposure | Full Sun |
| Manufacturer | Twin Canaries Liquid Volume Conversion Chart |
| ASIN | B0949TQN76 |

## Product Details

- **Material:** Stone Wool
- **Colour:** Red
- **Special feature:** organic
- **Style:** Rustic
- **Planter form:** Plant Pot

## Images

![4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart - Image 1](https://m.media-amazon.com/images/I/71L0ldvRKSL.jpg)
![4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart - Image 2](https://m.media-amazon.com/images/I/712j2hrQAFL.jpg)
![4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart - Image 3](https://m.media-amazon.com/images/I/71F0JO5orLL.jpg)
![4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart - Image 4](https://m.media-amazon.com/images/I/71hcClzpXkL.jpg)
![4 Inch Redrock Rockwool PRO Grow Block for Hydroponics | 6 Pack + Twin Canaries Chart - Image 5](https://m.media-amazon.com/images/I/81dJCfbC37L.jpg)

## Frequently Bought Together

- Redrock Rockwool Cube – 4" x 4" PRO Stone Wool Starter Block with 42/40 Hole | Rockwool for Hydroponics and Indoor Growing | 6 Pack + Twin Canaries Chart
- Redrock Rockwool Cube – 6" x 6" PRO Stone Wool Planting Block with 42/40 Hole | Commercial Rockwool for Hydroponics | 4 Pack + Twin Canaries Chart
- VidaWool 1.5" Seed Starter Plugs-Hydroponic Pods- Stone Wool-Rock Wool Cubes for Hydroponics-Plant Starter Grow Pods-Hydroponics Growing System-Garden Supplies for Plant Propagation-50 Count Bag

---

## 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.kr/products/501300759-4-inch-redrock-rockwool-pro-grow-block-for-hydroponics-6](https://www.desertcart.kr/products/501300759-4-inch-redrock-rockwool-pro-grow-block-for-hydroponics-6)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-11*