--- product_id: 7682081 title: "Seachem Flourite Black 7 kg / 15.4 lbs" brand: "seachem" price: "₨73585" currency: LKR in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.lk/products/7682081-seachem-flourite-black-7-kg-15-4-lbs store_origin: LK region: Sri Lanka --- # Optimized for natural planted aquariums pH-neutral, no chemical coating 7 kg stable porous clay gravel Seachem Flourite Black 7 kg / 15.4 lbs **Brand:** seachem **Price:** ₨73585 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate your aquascape with nature’s black gold! ## Quick Answers - **What is this?** Seachem Flourite Black 7 kg / 15.4 lbs by seachem - **How much does it cost?** ₨73585 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/7682081-seachem-flourite-black-7-kg-15-4-lbs) ## Best For - seachem enthusiasts ## Why This Product - Trusted seachem brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compatible & Durable:** Works seamlessly with under gravel filters and won’t degrade over time. - • **Natural Black Elegance:** Gives your aquarium a sleek, authentic look that stands out in any freshwater setup. - • **Porous Clay Powerhouse:** Enhances root growth and nutrient absorption for thriving aquatic plants. - • **No Chemical Interference:** Maintains stable water chemistry—no pH shifts or harmful coatings. - • **Dust Settles, Growth Soars:** Initial cloudiness clears fast, promoting rapid plant health and lush aquascapes. ## Overview Seachem Flourite Black is a 7 kg premium porous clay gravel substrate designed specifically for planted freshwater aquariums. It supports robust plant growth by enhancing nutrient uptake without altering water pH. Its natural black finish creates a striking, authentic aquascape while being fully compatible with filtration systems. Though initial dust may cause temporary cloudiness, it settles quickly, leaving a stable, long-lasting substrate that nurtures vibrant aquatic life. ## 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: Plants love it - It's true, this stuff is dusty. I put the gravel right in my tank, didn't bother rinsing since the instructions say rinsing is optional, and I didn't want to lose a bunch out the strainer and down the drain. My tank was cloudy for the rest of the evening but had nearly cleared up by the next morning. That day I added a little more, so the water got cloudy again, but was cleared by the next evening. I just let my filter run and had a little faith. I did have to change my brand new filter after the dust settled, but since then it hasn't been a problem. I now enjoy crystal clear water with a fabulous black substrate without any epoxy or rubber coating. I have no new dust coming up, even when the fish nose around in it. Since you have to cycle your tank and gravel for at least a week before adding fish, a few days of cloudiness isn't a problem, and the advantages outweigh the temporary ugliness. I am a first time fish/aquatic plant keeper, and thanks to this gravel and a few doses of Flourish, my plants are growing up and out of my tank, even with barely adequate lighting! I am planing on trying the Flourite sand for my next tank, and really do feel great telling other people about this product. Just be prepared to not see the back of your tank for a few hours. :) ## 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 | |---------------|-------| | ASIN | B0019J0ISU | | Best Sellers Rank | #25,041 in Pet Supplies ( See Top 100 in Pet Supplies ) #29 in Aquarium Gravel | | Brand | Seachem | | Brand Name | Seachem | | Customer Reviews | 4.6 out of 5 stars 2,788 Reviews | | Global Trade Identification Number | 00000116372503 | | Included Components | Seachem Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs | | Item Type Name | Seachem Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs | | Item Weight | 7 kg | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer Part Number | 3725 | | Manufacturer Warranty Description | Warranty | | Model Number | 3725 | | Style | Gravel | | Style Name | Gravel | | UPC | 000116372503 | | Unit Count | 246.4 Ounce | ## Product Details - **Brand:** Seachem - **Global Trade Identification Number:** 00000116372503 - **Item Weight:** 7 kg - **Style:** Gravel - **UPC:** 000116372503 ## Images ![Seachem Flourite Black 7 kg / 15.4 lbs - Image 1](https://m.media-amazon.com/images/I/81MD5ecH5wL.jpg) ![Seachem Flourite Black 7 kg / 15.4 lbs - Image 2](https://m.media-amazon.com/images/I/91rTBK0VpsL.jpg) ![Seachem Flourite Black 7 kg / 15.4 lbs - Image 3](https://m.media-amazon.com/images/I/61L2q0x1-JL.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 ### ⭐⭐⭐⭐⭐ Plants love it *by A***A on January 5, 2011* It's true, this stuff is dusty. I put the gravel right in my tank, didn't bother rinsing since the instructions say rinsing is optional, and I didn't want to lose a bunch out the strainer and down the drain. My tank was cloudy for the rest of the evening but had nearly cleared up by the next morning. That day I added a little more, so the water got cloudy again, but was cleared by the next evening. I just let my filter run and had a little faith. I did have to change my brand new filter after the dust settled, but since then it hasn't been a problem. I now enjoy crystal clear water with a fabulous black substrate without any epoxy or rubber coating. I have no new dust coming up, even when the fish nose around in it. Since you have to cycle your tank and gravel for at least a week before adding fish, a few days of cloudiness isn't a problem, and the advantages outweigh the temporary ugliness. I am a first time fish/aquatic plant keeper, and thanks to this gravel and a few doses of Flourish, my plants are growing up and out of my tank, even with barely adequate lighting! I am planing on trying the Flourite sand for my next tank, and really do feel great telling other people about this product. Just be prepared to not see the back of your tank for a few hours. :) ### ⭐⭐⭐⭐⭐ Would buy again *by A***Z on July 19, 2026* 2nd time purchasing as i needed more for upgrading to bigger tank. Cant get over how good this gravel really is, love the black appearance to my floor just looks great! would choose this 1000 times. good for corydoras as mine have been doing good and healthy, no shortened whiskers they love it --- ## 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.lk/products/7682081-seachem-flourite-black-7-kg-15-4-lbs](https://www.desertcart.lk/products/7682081-seachem-flourite-black-7-kg-15-4-lbs) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-09-22*