--- product_id: 8950270 title: "Denitrate 1 Liter" brand: "seachem" price: "€ 41.94" currency: EUR in_stock: true reviews_count: 13 category: "Seachem" url: https://www.desertcart.pt/products/8950270-denitrate-1-liter store_origin: PT region: Portugal --- # Rapid nitrate & nitrite removal Treats up to 100 gallons 4mm porous inorganic media Denitrate 1 Liter **Brand:** seachem **Price:** € 41.94 **Availability:** ✅ In Stock ## Summary > 💧 Clear water, happy fish—denitrate your tank like a pro! ## Quick Answers - **What is this?** Denitrate 1 Liter by seachem - **How much does it cost?** € 41.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/8950270-denitrate-1-liter) ## 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 - • **Compact Yet Mighty:** 1 liter treats up to 100 gallons, delivering maximum impact with minimal space. - • **Fast-Acting Clarity:** Noticeably reduces nitrates, nitrites, and ammonia within days—keep your fish thriving. - • **Dual-Environment Power:** Perfectly engineered for both marine and freshwater tanks, ensuring versatile use. - • **Biological Filter Booster:** Supports and enhances your existing biofilter for a healthier aquatic ecosystem. - • **Effortless Aquarium Detox:** No special filters or cultures needed—just add and watch your water transform. ## Overview Seachem Denitrate is a high-porosity, 4mm inorganic filtration media designed for efficient anaerobic denitrification in both marine and freshwater aquariums. It removes nitrates, nitrites, ammonia, and organics without requiring special filters or cultures. Each 1-liter pack treats up to 100 gallons, supporting biological filtration and rapidly improving water quality to keep aquatic life healthy and vibrant. ## Description Sachem Denitrate is a high porosity filtration product for the removal and control of nitrate in marine and freshwater aquaria by anaerobic denitrification. It is a porous inorganic solid about 4 mm in diameter. It does not require a special denitrifying filter or special culture feedings. It is also helpful in controlling nitrite and ammonia. The surface area characteristics of de*nitrate are similar to Matrix, making de*nitrate an effective support for the biological filter. Each liter treats up to 100 gallons. Marine or fresh water use. Review: Works Great! - Fantastic product! Eliminated the nitrites and nitrates completely within the first few days. Review: Works fast to take out nitrates and nitrites - I started loosing fish in my 25 gal. Fish tank...checked my water and nitrates were way too high. Bought these white covered rocks and replaced my filter rocks for these...next day, happy and living fish again!!! I l9ve this product!! ## Features - For marine and freshwater - Provides support for biological Filter - Removes nitrates, nitrites, ammonia, and organics - The Package Weight Of The Product Is 1.78 Pounds ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000255PGC | | ASIN | B000255PGC | | Age Range Description | all stages | | Best Sellers Rank | #29,581 in Pet Supplies ( See Top 100 in Pet Supplies ) #317 in Aquarium Filter Accessories | | Brand Name | Seachem | | Color | grey | | Customer Reviews | 4.5 4.5 out of 5 stars (1,199) | | Date First Available | June 20, 2004 | | Date First Available | June 20, 2004 | | Department | Unisex-Adult | | Department | Unisex-Adult | | Directions | Add the denitrifying stones to filter media. | | Included Components | all | | Is Discontinued By Manufacturer | No | | Item Dimensions LxWxH | 8 x 3.7 x 3.6 inches | | Item Package Dimensions L x W x H | 7.99 x 3.7 x 3.7 inches | | Item Weight | 1.7 Pounds | | Item model number | 19249 | | Item model number | 19249 | | Manufacturer | Seachem Laboratories, Inc. | | Manufacturer | Seachem Laboratories, Inc. | | Material | Plastic | | Model Name | De*nitrate 1L | | Number of Items | 1 | | Product Dimensions | 8 x 3.7 x 3.6 inches; 1.7 Pounds | | Size | 1 L | | Specific Uses for Product | Active | | Target Audience Keyword | fish | | Warranty Description | Warranty | ## Product Details - **Brand:** Seachem - **Item Form:** Liquid - **Item Weight:** 1.7 Pounds - **Liquid Volume:** 1 Liters - **Manufacturer:** Seachem Laboratories, Inc. ## Images ![Denitrate 1 Liter - Image 1](https://m.media-amazon.com/images/I/81hrV52PKQL.jpg) ## Questions & Answers **Q: Did anyone get 2l bottles with amazon being the seller? i tried twice and received 1l bottles. thanks!** A: 9/26/2017 Received my two containers today. Ordered two each of 2-liter size. Got two each of 1-liter size container. Shameful in my opinion! **Q: How do I use this product with a wet/dry filtration system?** A: Put it in a bag near the water intake tube, and make sure that the bag is fat (mine holds a whole jar) to keep the center protected from oxygen. You want a mild movement of water but not enough to disturb the inside bacteria. The outside bacteria will like oxygen, but to remove nitrates, you also need to colonize anaerobic bacteria. I have kept nitrates a zero for months now with no water changes, BUT I also dosed the tanks with BioDigest bacteria, which has both aerobic and anaerobic bacteria to eat nitrates. That combination seems to work well. **Q: what is the difference between this and matrix?** A: It’s the same it’s just smaller stones. No difference **Q: What filter can I use this in that is 50 gph or less rate?** A: You can use any canister filter with it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works Great! *by F***Y on July 19, 2025* Fantastic product! Eliminated the nitrites and nitrates completely within the first few days. ### ⭐⭐⭐⭐⭐ Works fast to take out nitrates and nitrites *by S***W on July 21, 2025* I started loosing fish in my 25 gal. Fish tank...checked my water and nitrates were way too high. Bought these white covered rocks and replaced my filter rocks for these...next day, happy and living fish again!!! I l9ve this product!! ### ⭐⭐⭐⭐⭐ Works well *by C***. on December 8, 2024* Great product, it’s lowering my nitrate levels in my marine aquarium ## Frequently Bought Together - Seachem Denitrate 1 Liter - DEPEPE 10pcs 7.8 x 5.9 Inch Aquarium Filter Media Bags with Zipper for Activated Carbon, Biospheres, Ceramic Rings - Seachem Indoor Purigen Organic Filtration Resin - Fresh and Saltwater 100 ml --- ## 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.pt/products/8950270-denitrate-1-liter](https://www.desertcart.pt/products/8950270-denitrate-1-liter) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-05-04*