---
product_id: 7682081
title: "Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs"
price: "902.92 DT"
currency: TND
in_stock: true
reviews_count: 8
url: https://www.desertcart.tn/products/7682081-flourite-black-clay-gravel-stable-porous-natural-planted-aquarium-substrate
store_origin: TN
region: Tunisia
---

# Optimized for planted aquariums Porous stable clay gravel 15.4 lbs premium substrate Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs

**Price:** 902.92 DT
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquarium game with the substrate pros trust!

## Quick Answers

- **What is this?** Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs
- **How much does it cost?** 902.92 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/7682081-flourite-black-clay-gravel-stable-porous-natural-planted-aquarium-substrate)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **No Chemical Coatings:** Maintains stable pH, ensuring a safe environment for fish and flora
- • **Versatile Compatibility:** Works seamlessly with under gravel filters and other substrates
- • **Natural Porous Clay Base:** Enhances root oxygenation for thriving aquatic plants
- • **Instant Aquascape Upgrade:** Deep black tone creates a sleek, natural backdrop that elevates any tank aesthetic
- • **Low Maintenance, Long Lasting:** Does not decompose or require replacement, saving time and money

## Overview

Seachem Flourite Black Clay Gravel is a 15.4 lb premium, porous clay substrate designed specifically for natural planted freshwater aquariums. Its chemically inert, stable composition supports healthy plant growth without altering water pH. The deep black color offers a natural, elegant look that enhances aquascapes, while its compatibility with under gravel filters and long-lasting durability make it a top choice for serious aquarists seeking both performance and style.

## Description

Seachem Flourite Black is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment.For over three decades, Seachem has been a company rooted in sound science. Our experience in the hobby and an educated staff of chemists and biologists are part of the package when you purchase Seachem products. Seachem remains as one of the few surviving independent and privately owned pet care companies. Seachem is owned and operated by hobbyists. All of our employees are hobbyists who maintain aquariums at home and at the office. Seachem itself was started because one such passionate hobbyist - Dr. Leo G. Morin (Founder) - recognized that the available solutions to aquarists problem wanting. This resulted in Seachem’s very first product: Cupraplex (today known as Cupramine). Over thirty years later Seachem is still approaching old problems in a new way. Seachem’s philosophy is that the knowledgeable hobbyist makes the best customer. This is reflected in solid and reliable customer education and support as well as products proven in science and performance. While Seachem has grown rapidly into a national and international firm, it retains the culture of a small company and is readily available to its customers.

Review: Great for Aquascaping - Yes, probably best to wash it... but honestly not the end of the world if you don't (unless you try adding it to an existing tank with no backup tank to put existing fish from that tank). It will take a couple of days for the dust to settle if you don't rinse it. And if you stir it up again by moving things or planting, it will take a couple more. However, over time, the dust settles down beneath the rocks and is harder to disrupt. I didn't wash mine on a new tank setup and it was barely cloudy for a few days. No fish went in right away so no problem. I think the dust is probably good for the plants since the smaller particles are easier to absorb than whole rocks. I got a second bag of the dark reddish flourite and put that into an existing tank and it got very cloudy, like a storm on Mars or something. Even that cleared up within about 36 hours. (I did have to relocate my fishes to other tanks though because I don't want them choking on the dust) I used the flourite as well as fertilizing tabs by seachern, and my plants are very healthy and grow very fast, including a nice thick carpeting of monte carlo. In contrast with another tank I have without "plant supporting" substrate, the tanks with the flourite grow plants much faster (with same brand lighting, and no Co2, just liquid fertilizer from seachern.) I'd recommend a light rinsing if you're in a hurry to get a tank setup, and definitely if you're adding it to an existing tank. The color is awesome and looks very natural, which is rare for a black substrate. I've bought a couple different brands I threw out because they just looked unnatural in black (one was obviously painted :/ ) So I really like this substrate and have already bought more. I think you'll like it too as long as you're prepared to let the dust settle over a few days. :D
Review: Keeps its color. - We got this because the color is not supposed to fade. It is a naturally black gravel. It is not painted/coated like most colored gravels. It looks great in our glow tank. I highly recommend washing this gravel prior to use. Despite what it might say, it is very dirty right out of the bag. (We got 3 bags and all were dirty). If you desire quality black gravel, and have a little extra money to spend, this is for you.

## Features

- GRAVEL: Seachem Flourite Black is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment.
- AQUARIUM BED: Gravel modifiers such as laterite are not necessary when using Seachem Flourite Black as this product is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels.
- SET-UP: When adding water to the aquarium, fill slowly to avoid disturbing Flourite Black substrate bed. Place a bowl in the aquarium and add water directly to the bowl, allowing water to overflow softly on to the gravel bed. Initial cloudiness is normal, but to remove this simply use mechanical filtration
- COMPATIBLE: Flourite Black substrates will work fine with an under gravel filter and will not soften or decompose to an unsuitable state within your tank.Flourite substrates will work fine with an UGF
- SAFETY: Seachem Flourite Black is not chemically coated or treated, thus does not alter the pH of the water. Flourite Black is beneficial for the life of the aquarium and need not be replaced.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.6 out of 5 stars 2,738 Reviews |

## Images

![Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs - Image 1](https://m.media-amazon.com/images/I/81MD5ecH5wL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for Aquascaping
*by B***T on March 5, 2020*

Yes, probably best to wash it... but honestly not the end of the world if you don't (unless you try adding it to an existing tank with no backup tank to put existing fish from that tank). It will take a couple of days for the dust to settle if you don't rinse it. And if you stir it up again by moving things or planting, it will take a couple more. However, over time, the dust settles down beneath the rocks and is harder to disrupt. I didn't wash mine on a new tank setup and it was barely cloudy for a few days. No fish went in right away so no problem. I think the dust is probably good for the plants since the smaller particles are easier to absorb than whole rocks. I got a second bag of the dark reddish flourite and put that into an existing tank and it got very cloudy, like a storm on Mars or something. Even that cleared up within about 36 hours. (I did have to relocate my fishes to other tanks though because I don't want them choking on the dust) I used the flourite as well as fertilizing tabs by seachern, and my plants are very healthy and grow very fast, including a nice thick carpeting of monte carlo. In contrast with another tank I have without "plant supporting" substrate, the tanks with the flourite grow plants much faster (with same brand lighting, and no Co2, just liquid fertilizer from seachern.) I'd recommend a light rinsing if you're in a hurry to get a tank setup, and definitely if you're adding it to an existing tank. The color is awesome and looks very natural, which is rare for a black substrate. I've bought a couple different brands I threw out because they just looked unnatural in black (one was obviously painted :/ ) So I really like this substrate and have already bought more. I think you'll like it too as long as you're prepared to let the dust settle over a few days. :D

### ⭐⭐⭐⭐⭐ Keeps its color.
*by J***M on January 27, 2025*

We got this because the color is not supposed to fade. It is a naturally black gravel. It is not painted/coated like most colored gravels. It looks great in our glow tank. I highly recommend washing this gravel prior to use. Despite what it might say, it is very dirty right out of the bag. (We got 3 bags and all were dirty). If you desire quality black gravel, and have a little extra money to spend, this is for you.

### ⭐⭐⭐⭐⭐ Great Substrate, no need to worry about the cloudiness that most complaints refer to.
*by P***. on June 17, 2020*

Almost all the bad reviews related to this product refers to how dirty it makes your water. There is a simple remedy. 24hrs after filling my new tank with unwashed Flourite Black I had a crystal clear tank. Open bags and pour directly into an empty aquarium. Place all rocks, fixtures, decor and plants before filling. When it comes time to fill the tank you can't just stick a hose in at full blast or dump buckets of water into your tank. Instead trickle fill with a hose onto a plate, into a small bowl or over a large rock to disperse the water flow so it does not disturb the substrate. I personally used a pitcher to pour water into the tank. This takes a while but it is a lot less work than rinsing this stuff in a bucket multiple times only to find that the water is always cloudy when finished anyways. You will still get a rather cloudy water but all you have to do is run your filter for 24 hrs and then add the magic secret (Although you could probably use it immediately. I had to wait for Amazon to ship it to me the next day). I used a product called API Accu-Clear. You can buy it on Amazon for about $8 for an 8oz bottle, however it only takes 1/2 cap-full to treat a 50gal tank. You can find numerous other aquarium clarifiers on Amazon from other producers if you prefer, but I can only vouch for API since that is the one I used. 20 mins later you will have a crystal clear tank. The pictures attached show it's effectiveness.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-07*