---
product_id: 48554670
title: "Rockwool Cubes Grow Blocks 3\" 4\" 6\" Small Large Hole Hydroponics (4\" Cube Large Hole (38/35) - Qty 10)"
brand: "cultilene"
price: "C$4595"
currency: NIO
in_stock: true
reviews_count: 1
url: https://www.desertcart.ni/products/48554670-rockwool-cubes-grow-blocks-3-4-6-small-large-hole
store_origin: NI
region: Nicaragua
---

# Ideal hydroponic growth medium Superior water retention & aeration Optimal cube sizes (3", 4", 6") Rockwool Cubes Grow Blocks 3" 4" 6" Small Large Hole Hydroponics (4" Cube Large Hole (38/35) - Qty 10)

**Brand:** cultilene
**Price:** C$4595
**Availability:** ✅ In Stock

## Summary

> 🌿 Grow smarter, not harder — elevate your hydroponics game!

## Quick Answers

- **What is this?** Rockwool Cubes Grow Blocks 3" 4" 6" Small Large Hole Hydroponics (4" Cube Large Hole (38/35) - Qty 10) by cultilene
- **How much does it cost?** C$4595 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/48554670-rockwool-cubes-grow-blocks-3-4-6-small-large-hole)

## Best For

- cultilene enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight & Durable:** Easy to handle 480g packs that maintain structure throughout growth cycles.
- • **Precision Sized Cubes:** Choose from 3", 4", or 6" blocks tailored for your unique hydroponic setup.
- • **Enhanced Root Oxygenation:** Large holes (38/35) ensure roots breathe easy, promoting vigorous growth.
- • **Consistent Moisture Control:** Rockwool’s superior water retention balances hydration without waterlogging.
- • **Professional Grade Growing Medium:** Trusted by hydroponic experts for clean, efficient, and scalable cultivation.

## Overview

Cultilene Rockwool Cubes are precision-engineered hydroponic grow blocks available in 3", 4", and 6" sizes with large holes (38/35) for optimal root aeration and water retention. Each lightweight 480g pack supports efficient, professional-grade plant cultivation, making it the go-to medium for millennial growers seeking clean, scalable, and high-yield hydroponic solutions.

## Description

Product description               Growers use rockwool cubes to start their seedlings and also to root their cuttings. Rockwool is a fantastic hydroponic growth media offering excellent water and air holding capacities—but it does not come ready to use. Rockwool has a high pH of around 8 caused by lime forming on the fibers during manufacture. This lime can be removed through pre-soaking the rockwool in pH adjusted water                  Legal Disclaimer               Growers use rockwool cubes to start their seedlings and also to root their cuttings. Rockwool is a fantastic hydroponic growth media offering excellent water and air holding capacities—but it does not come ready to use. Rockwool has a high pH of around 8 caused by lime forming on the fibers during manufacture. This lime can be removed through pre-soaking the rockwool in pH adjusted water

## Features

- growing median

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Package Dimensions | 53.9 x 16.6 x 12.2 cm; 480 g |
| ASIN | B0741CG8H9 |

## Images

![Rockwool Cubes Grow Blocks 3" 4" 6" Small Large Hole Hydroponics (4" Cube Large Hole (38/35) - Qty 10) - Image 1](https://m.media-amazon.com/images/I/414nbuTetaL.jpg)

## Customer Reviews

### ⭐⭐ Pathetic
*by L***A on 31 July 2021*

2 attempts at delivering the right item and still cannot read an order I will not be shopping with this company again 2 try's at sending 4 inch large hole cubes first lot were 3 inch small hole second lot were 4 inch blocks but still small hole it's not rocket science went elsewhere and got the right order first time at over half the price. It is no good being quick to re-send when you still send the wrong item.

## Frequently Bought Together

- Cultilene Rockwool Cubes Grow Blocks 3" 4" 6" Small Large Hole Hydroponics (4" Cube Large Hole (38/35) - Qty 10)
- Canna Coco 1L A&B Bottles Set
- CANNA Coco Professional Pro Soil 50L, Brown

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**Shop now:** [https://www.desertcart.ni/products/48554670-rockwool-cubes-grow-blocks-3-4-6-small-large-hole](https://www.desertcart.ni/products/48554670-rockwool-cubes-grow-blocks-3-4-6-small-large-hole)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-22*