--- product_id: 253420168 title: "Seachem Flourish Excel Bioavailable Carbon For The Planer Aquarium, 500 ml" brand: "seachem" price: "176.88 DT" currency: TND in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.tn/products/253420168-seachem-flourish-excel-bioavailable-carbon-for-the-planer-aquarium-500 store_origin: TN region: Tunisia --- # Bioavailable carbon source 500 ml liquid volume Iron-reducing ferrous state enhancer Seachem Flourish Excel Bioavailable Carbon For The Planer Aquarium, 500 ml **Brand:** seachem **Price:** 176.88 DT **Availability:** βœ… In Stock ## Summary > 🌿 Elevate Your Aquascape Game with Bioavailable Carbon Power! ## Quick Answers - **What is this?** Seachem Flourish Excel Bioavailable Carbon For The Planer Aquarium, 500 ml by seachem - **How much does it cost?** 176.88 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/253420168-seachem-flourish-excel-bioavailable-carbon-for-the-planer-aquarium-500) ## 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 - β€’ **Optimized pH Balance:** Ideal for aquariums where CO2 injection risks dangerously low pH, maintaining a stable and thriving aquatic habitat. - β€’ **Safe & Clean Formula:** BPA-free liquid formula ensures a toxin-free environment for your aquatic ecosystem. - β€’ **Visible Results in 10-14 Days:** Experience greener, healthier plants and reduced algae growthβ€”perfect for aquascaping pros who demand fast, stunning results. - β€’ **Dual Action for Healthier Plants:** Enhances photosynthetic intermediates while promoting iron absorption in its most bioavailable form (Fe+2). - β€’ **Boost Plant Growth Without CO2 Hassle:** A powerful organic carbon source that complements or replaces CO2 injection for lush, vibrant aquascapes. ## Overview Seachem Flourish Excel is a 500 ml liquid bioavailable carbon supplement designed for planted aquariums. It serves as an effective alternative or complement to CO2 injection by providing organic carbon and enhancing iron uptake in plants. This BPA-free formula promotes healthier, greener aquatic plants while helping to control algae and maintain stable pH levels, making it a must-have for serious aquascaping enthusiasts. ## Description From the manufacturer Seachem Flourish Excel Bioavailable Carbon for The Planted Aquarium Flourish Excel is a source of bioavailable organic carbon. All plants require a source of carbon. This is typically obtained from CO2, but, may also be derived from simple organic compounds (such as photosynthetic intermediates). The use of either CO2 injection or Flourish Excel does not necessarily negate the use of the other. Because the processes of producing photosynthetic intermediates and building onto them occur simultaneously, one can derive a substantial benefit with the use of Flourish Excel either alone or in conjunction with CO2 . The combination is particularly ideal for situations when continuing to add CO2 could result in dangerously low pH levels. Flourish Excel also has iron reducing properties which promote the ferrous state of iron (Fe+2), which is more easily utilized by plants than ferric iron (Fe+3). Review: Good Product - Highly recommended product for planted aquarium. Review: A must for aquascaping enthusiasts.. life changer! - Visible results seen within 10-14 days. Less algae and greener and healthier plants. Great product. ## Features - Bioavailable carbon source for the planted aquarium - Use as an alternative to CO2 injection or in addition to it - Introduces photosynthetic intermediates ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000256962 | | Allergen Information | BPA-Free | | Best Sellers Rank | #3,618 in Pet Supplies ( See Top 100 in Pet Supplies ) #45 in Aquariums | | Brand | Seachem | | Brand Name | Seachem | | Customer Reviews | 4.6 out of 5 stars 8,572 Reviews | | Global Trade Identification Number | 00000116045308 | | Included Components | Seachem Flourish Excel 500 ml | | Item Form | Liquid | | Item Type Name | Planted Aquarium Products | | Item Weight | 454 Grams | | Item form | Liquid | | Item weight | 454 Grams | | Liquid Volume | 500 Milliliters | | Liquid volume | 500 Milliliters | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer Part Number | 075225 | | Model Number | 116045308 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Aquatic Plants | | UPC | 752190152686 000116045308 | | Unit Count | 1 Count | | Unit count | 1 Count | ## Product Details - **Brand:** Seachem - **Item form:** Liquid - **Item weight:** 454 Grams - **Liquid volume:** 500 Milliliters - **Number of Packs:** 1 ## Images ![Seachem Flourish Excel Bioavailable Carbon For The Planer Aquarium, 500 ml - Image 1](https://m.media-amazon.com/images/I/61V3cVDRUYL.jpg) ## Questions & Answers **Q: What causes this product to kill algae, and does it kill anything else (like beneficial bacteria)?** A: I bought the Seachem Flourish Excel because it seems to be the best solution to a Black Beard Algae problem I'm having, and after studying what it does, and how it does it, I too was worried about the Beneficial Bacteria in my 2 large canister filters.Couldn't find a direct answer to that question, so I sent an e-mail directly to Seachem Laboratories. Here is my question to them and their reply...... Message: I have a 72 gal heavily planted community tank and am having an outbreak of Black Beard Algae. I purchased your product as it seems the best solution to the problem, but I need a question answered before I can use your product. I now understand how your product works, but will this product also kill off the Beneficial Bacteria inside the Seachem Matrix Bio-Media of my 2 large canister filters?! Crashing the cycle in my tank is not an option. Is this product (Flourish Excel) safe to use for the bacteria that maintains the nitrogen cycle of my tank, or will it kill the bacteria in my filter media along with the Black Beard Algae and crash the nitrogen cycle of my tank? Need a straight answer, please, Thank You Seachem Support 10304 (Seachem Laboratories) Sep 23, 2022, 16:31 ADT Hi there, thanks for reaching out! No, Excel will not affect your biological filtration if dosed appropriately. Hope this helps! Seachem Support 10304 Needless to say, I am very relieved, and pleased. Now I can start the process of getting rid of that Black Beard Algae and not worry about crashing my nitrogen cycle. 2 Thumbs Up to Seachem Laboratories! **Q: are they copper free?** A: No. They contain 0.001% copper. Though people have used them in shrimp tanks without a problem, others have had shrimp die, particularly if the tablet got stirred up from the substrate (rescaping, fish burrowing, etc). If there's a chance of your substrate being disturbed, I'd recommend going with API Root Tabs instead, as they do not contain copper. **Q: How I use this for my tank 20 gallons** A: Per the instructions: "On initial use or after a major (> 40%) water change, use 1 capful (5 mL) for every 40 L (10 US gallons). Thereafter use 1 capful for every 200 L (50 US gallons) daily or every other day. For smaller dosing please note that each cap thread is approximately 1 mL." 1 cap = 5ml 1 cap for every 50 gallon equates to 1 ml for every 10 gallons or 2 ml for 20 gallons. **Q: Is the product compatible with freshwater invertebrates, like amano shrimp?** A: I use this product on a regular basis and I have snails and shrimp in my tank. No problems. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Product *by J***N on 23 January 2026* Highly recommended product for planted aquarium. ### ⭐⭐⭐⭐⭐ A must for aquascaping enthusiasts.. life changer! *by S***H on 18 July 2021* Visible results seen within 10-14 days. Less algae and greener and healthier plants. Great product. ### ⭐⭐⭐⭐⭐ This is a must have for aquarium plants *by A***A on 13 January 2021* Using 1ml of excel everyday in our planted aquarium. ## Frequently Bought Together - Seachem Flourish Excel 500 ml - Seachem Flourish Freshwater Plant Supplement 500 ml - Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 500 ml --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/253420168-seachem-flourish-excel-bioavailable-carbon-for-the-planer-aquarium-500](https://www.desertcart.tn/products/253420168-seachem-flourish-excel-bioavailable-carbon-for-the-planer-aquarium-500) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-31*