---
product_id: 37315501
title: "Grodan Classic Slab 30/75 12 by 3 by 36 Inch"
brand: "grodan"
price: "€ 11.70"
currency: EUR
in_stock: false
reviews_count: 6
category: "Lawn & Patio"
url: https://www.desertcart.hr/products/37315501-grodan-classic-slab-30-75-12-by-3-by-36
store_origin: HR
region: Croatia
---

# Grodan Classic Slab 30/75 12 by 3 by 36 Inch

**Brand:** grodan
**Price:** € 11.70
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Grodan Classic Slab 30/75 12 by 3 by 36 Inch by grodan
- **How much does it cost?** € 11.70 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/37315501-grodan-classic-slab-30-75-12-by-3-by-36)

## Best For

- grodan enthusiasts

## Why This Product

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

## Description

Size:12 Inch x 3 Inch x 36 Inch
            
          
          
        
      
    
  


        
        
     
	       
     

     
                              
     
       	       
        
         
        
        	
        	
        		
        			Gro-Slabs provide the final stage for growing a spectacularly large plant. Transplant your Gro-Block plant onto a slab just like professional growers. They come in clearly marked biodegradable UV resistant sleeves for comfortable handling and algae prevention. Uni-slab - All plant roots are protected and contained for the life of the plant. Due to its size, the Uni-Slab is perfect for one large plant. Uni-Slab has the benefits of a slab with the versatility of a block. All Gro-Slabs have vertical fibers except the 12 inch Gro-Slab, which has horizontal fibers.

## Features

- Gro-Slabs provide the final stage for growing a spectacularly large plant.
- Transplant your Gro-Block plant onto a slab just like professional growers.
- They come in clearly marked biodegradable UV resistant sleeves for comfortable handling and algae prevention.
- Uni-slab - All plant roots are protected and contained for the life of the plant. Due to its size, the Uni-Slab is perfect for one large plant.
- Uni-Slab has the benefits of a slab with the versatility of a block. All Gro-Slabs have vertical fibers except the 12 inch Gro-Slab, which has horizontal fibers.
- Cube measures 30mm L by 30mm W by 75mm H

## Images

![Grodan Classic Slab 30/75 12 by 3 by 36 Inch - Image 1](https://m.media-amazon.com/images/I/41lZsjomXuL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐ Shipping was quick, product was well packaged.  Slow to saturate.
*by L***. on January 4, 2018*

I processed this slab into 4 x 4 x 2.5 inch cubes for use in a hydroponic growing wheel. It cut easily and was packaged nicely however I noted that when soaking the pieces prior to planting they were slow to accept water and I needed to physically hold many of the cubes under water for some time to insure they were thoroughly saturated.  Even after 3 or 4 minutes, air bubbles were still emerging from the pieces.  In contrast, the processed cubes I have purchased in the past typically will fill with water very quickly.

### ⭐⭐⭐⭐ Four Stars
*by A***R on April 13, 2017*

Good product, slightly overpriced.

### ⭐⭐⭐⭐⭐ Prime!
*by W***L on March 31, 2016*

It's great to see Prime offers on Grodan finally!  Thanks Amazon!

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**Shop now:** [https://www.desertcart.hr/products/37315501-grodan-classic-slab-30-75-12-by-3-by-36](https://www.desertcart.hr/products/37315501-grodan-classic-slab-30-75-12-by-3-by-36)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-08*