--- product_id: 2334538 title: "Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter" brand: "red sea" price: "$124.17" currency: USD in_stock: true reviews_count: 13 category: "Red Sea" url: https://www.desertcart.us/products/2334538-red-sea-no3-po4-x-nitrate-and-phosphate-reducer-nopox store_origin: US region: United States of America --- # Optimized for aquarium fish 1L liquid formula Balances nitrate & phosphate Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter **Brand:** red sea **Price:** $124.17 **Availability:** βœ… In Stock ## Summary > πŸ’§ Clear water, vibrant life β€” your aquarium’s secret weapon! ## Quick Answers - **What is this?** Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter by red sea - **How much does it cost?** $124.17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/2334538-red-sea-no3-po4-x-nitrate-and-phosphate-reducer-nopox) ## Best For - red sea enthusiasts ## Why This Product - Trusted red sea brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Generous 1-Liter Supply:** Long-lasting treatment that supports consistent water quality management. - β€’ **Easy-to-Use Liquid Formula:** Simple dosing ensures hassle-free maintenance for busy professionals. - β€’ **Enhances Fish Health & Vibrancy:** Promotes a thriving aquatic environment, making your tank the envy of your social circle. - β€’ **Trusted Brand with Proven Results:** Red Sea’s formula boasts 4.5-star ratings from over 850 aquarists worldwide. - β€’ **Precision Nitrate & Phosphate Control:** Keep your aquarium water crystal clear and healthy with targeted nutrient reduction. ## Overview Red Sea NO3:PO4-X is a 1-liter liquid treatment designed to reduce nitrate and phosphate levels in aquarium water, promoting healthier fish and clearer tanks. Highly rated by over 850 users, this trusted formula offers easy dosing and long-lasting effects, making it an essential for any serious aquarist. ## Description Pet Products Review: This stuff works, just go slow. - I've used NoPox in my reef for the last 9 months, and I've now started using it in my large FOWLR aquarium as well. There are multiple ways to reduce nitrates in saltwater aquariums, but NoPox (which is basically just methanol and vinegar) makes it very easy. From my observations, I can tell you a few things. First, start slowly. Nothing good happens quickly in this hobby, and reducing nitrates is part of that. I always begin with a half daily dose for the first week, and scale up from there. That seems to reduce or eliminate the initial bacteria blooms, and if you're keeping sensitive corals it will prevent you from rapidly bottoming out your nitrate and shocking them. Second, although the product says you shouldn't use phosphate removers in conjunction with NoPox, I've always done so, with no problems. NoPox is highly effective at removing nitrates, but in my experience doesn't really touch phosphates. You can still use phosguard or GFO with this product. Lastly, make sure you have an efficient protein skimmer running 24/7, and give it 3-4 weeks (or more) before you decide it's not working for you. If you're going slowly, it'll take time to lower your nitrates, but NoPox will do so. Just remember to adjust (as in reduce) your daily dose as your nitrates fall below 5-10 ppm. Review: Product works as advertised - I've only been using this product for 6 days and have recorded measurable results. I've been battling green hair algae (GHA) in my 90 gallon tank (mostly fish with a few coral) for some time now. My nitrates have always hovered around 10ppm (I never measured phosphates until starting this product). I changed from IO Sea Salt to Seachem Reef Salt, and preformed frequent water changes (15 gallons weekly). In addition, I decreased feedings to the point I was all but starving my fish, and had limited success. After 6-8 weeks of 15 gallon weekly water changes accompanied by manual GHA removal, and starving my fish, my nitrates dropped to about 5ppm, and I did see some GHA starting to turn brown. When I started this product my nitrates were at 5ppm, and phosphates at .16ppm; so according to the directions I began dosing 8ml per day. After 3 days my nitrates dropped to 2ppm (didn't preform PO4 test), I preformed another 15 gallon water change, and following the instructions, I decreased my dose to 4ml per day. On day 5 my nitrates were 0ppm, and phosphates .08ppm. So now I'm dosing 2ml per day, and will reduce the frequency of my water changes to every two weeks. In addition, I will continue to adjust the NO3PO4x dose until I can maintain nitrates between 1-2ppm as recommended by Red Sea. During these 6 days, I have seen more of the GHA turning brown and beginning to dislodge from the live rock. I will update this review in a week or two with a report on the GHA battle. Also, I highly recommend using this product in conjunction with the "Red Sea Algae Control Multi NO3/PO4 Test Kit" to accurately measure your results. ## Features - Nitrate and Phosphate Reduction: Biological solution designed to reduce nitrate and phosphate levels in marine and reef aquariums - Volume and Size: Contains 1000 ml (1 Liter) of concentrated formula for extended use in aquarium water treatment - Aquarium Water Treatment: Formulated specifically for use in saltwater aquariums to help maintain water quality parameters - NOPOX Formula: Liquid supplement that works with the biological filtration system to support nutrient management in reef tanks - Application for Marine Systems: Suitable for use in reef aquariums and marine fish-only systems requiring nutrient control ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004FUEAEI | | Best Sellers Rank | #33,703 in Pet Supplies ( See Top 100 in Pet Supplies ) #287 in Aquarium Water Treatments | | Brand | Red Sea | | Brand Name | Red Sea | | Customer Reviews | 4.5 out of 5 stars 850 Reviews | | Global Trade Identification Number | 00730773222049 | | Item Form | Liquid | | Item Highlight | for Saltwater Aquariums | | Item Weight | 16 ounces | | Liquid Volume | 1000 ml | | Manufacturer | Red Sea | | Manufacturer Part Number | 306050 | | Model Number | 306050 | | Number of Items | 1 | | Number of Packs | 1 | | Pet Type | Fish | | Target Species | Fish | | UPC | 730773222049 | | Unit Count | 1 Count | ## Product Details - **Brand:** Red Sea - **Item Form:** Liquid - **Item Weight:** 16 ounces - **Liquid Volume:** 1000 Milliliters - **Unit Count:** 1 Count ## Images ![Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter - Image 1](https://m.media-amazon.com/images/I/71KOxwWeu-L.jpg) ![Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter - Image 2](https://m.media-amazon.com/images/I/81P3UZj+zJL.jpg) ![Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter - Image 3](https://m.media-amazon.com/images/I/710hTN3hLUL.jpg) ![Red Sea NO3:PO4-X Nitrate & Phosphate Reducer (NOPOX), 1000 ml / 1 Liter - Image 4](https://m.media-amazon.com/images/I/81+qtj37exL.jpg) ## Questions & Answers **Q: Can this be diluted with rodi water?** A: I know of several reef keeper who dilute with rodi water when using smaller doses, although I would contact Red Sea for the right mixture **Q: I am running vinegar for nitrate reduction. How long do I need to stop the vinegar before I start this??** A: Suggest you call Red Sea. Their customer service with this product is helpful. Alternatively, you can also send an email. I've used both methods in successfully communicating with them. **Q: Does this take longer for large tanks? I have 150 gallon s with a 68 gallon sump.** A: tank size does not matter I have 180, and I dose it with a dosser which is the best way to reduce nitrates, this stuff is excellent....it will take a while for the bacteria to form (should not be more than a month) , you will notice first a white film on your glass, once that starts the bacteria is growing and the white will disappear, the fish and snails love the bacteria. Again it needs to be done daily and your nitrates can be either gone, or reduced down to nothing if you prefer to have just a small amount. Again a dosser is the best method Jaebo cheap and works well under 60.00 Hope this helps **Q: Can this be used in a freshwater aquarium?** A: It is suggested to use for salt water aquarium ## Customer Reviews ### ⭐⭐⭐⭐⭐ This stuff works, just go slow. *by D***. on August 12, 2021* I've used NoPox in my reef for the last 9 months, and I've now started using it in my large FOWLR aquarium as well. There are multiple ways to reduce nitrates in saltwater aquariums, but NoPox (which is basically just methanol and vinegar) makes it very easy. From my observations, I can tell you a few things. First, start slowly. Nothing good happens quickly in this hobby, and reducing nitrates is part of that. I always begin with a half daily dose for the first week, and scale up from there. That seems to reduce or eliminate the initial bacteria blooms, and if you're keeping sensitive corals it will prevent you from rapidly bottoming out your nitrate and shocking them. Second, although the product says you shouldn't use phosphate removers in conjunction with NoPox, I've always done so, with no problems. NoPox is highly effective at removing nitrates, but in my experience doesn't really touch phosphates. You can still use phosguard or GFO with this product. Lastly, make sure you have an efficient protein skimmer running 24/7, and give it 3-4 weeks (or more) before you decide it's not working for you. If you're going slowly, it'll take time to lower your nitrates, but NoPox will do so. Just remember to adjust (as in reduce) your daily dose as your nitrates fall below 5-10 ppm. ### ⭐⭐⭐⭐⭐ Product works as advertised *by T***R on September 30, 2014* I've only been using this product for 6 days and have recorded measurable results. I've been battling green hair algae (GHA) in my 90 gallon tank (mostly fish with a few coral) for some time now. My nitrates have always hovered around 10ppm (I never measured phosphates until starting this product). I changed from IO Sea Salt to Seachem Reef Salt, and preformed frequent water changes (15 gallons weekly). In addition, I decreased feedings to the point I was all but starving my fish, and had limited success. After 6-8 weeks of 15 gallon weekly water changes accompanied by manual GHA removal, and starving my fish, my nitrates dropped to about 5ppm, and I did see some GHA starting to turn brown. When I started this product my nitrates were at 5ppm, and phosphates at .16ppm; so according to the directions I began dosing 8ml per day. After 3 days my nitrates dropped to 2ppm (didn't preform PO4 test), I preformed another 15 gallon water change, and following the instructions, I decreased my dose to 4ml per day. On day 5 my nitrates were 0ppm, and phosphates .08ppm. So now I'm dosing 2ml per day, and will reduce the frequency of my water changes to every two weeks. In addition, I will continue to adjust the NO3PO4x dose until I can maintain nitrates between 1-2ppm as recommended by Red Sea. During these 6 days, I have seen more of the GHA turning brown and beginning to dislodge from the live rock. I will update this review in a week or two with a report on the GHA battle. Also, I highly recommend using this product in conjunction with the "Red Sea Algae Control Multi NO3/PO4 Test Kit" to accurately measure your results. ### ⭐⭐⭐⭐⭐ works great. *by P***E on April 7, 2015* The helped me get my nitrates down to 2ppm in a week. I'm a chronic overfeeder. My nitrates were always 20-25 ppm. The one thing you need in order to use this is a good skimmer. If you don't have a really good skimmer this isn't for you. This will create so much bacteria that if you don't have a good skimmer you'll just create a bacterial boom in your tank.i tried all the more expensive brands and this worked the best. One other thing this will clog any filter material at the start. Filter floss, pads etc. Within the first 24 hours. So it be best to remove them from the start. ## Frequently Bought Together - Red Sea NO3:PO4-X, Nitrate and Phosphate Reducer, 1 Liter - Red Sea Aqcult 306168 1 LTR Reefer Foundation B Alkalin - Aqcult 306167 1 Ltr Red Reefer Foundation A Calcium & Strontium --- ## 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.us/products/2334538-red-sea-no3-po4-x-nitrate-and-phosphate-reducer-nopox](https://www.desertcart.us/products/2334538-red-sea-no3-po4-x-nitrate-and-phosphate-reducer-nopox) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-06*