---
product_id: 2334538
title: "Red Sea NO3:PO4-X, Nitrate and Phosphate Reducer, 1 Liter"
brand: "red sea"
price: "1152 DH"
currency: MAD
in_stock: true
reviews_count: 9
url: https://www.desertcart.ma/products/2334538-red-sea-no3-po4-x-nitrate-and-phosphate-reducer-1
store_origin: MA
region: Morocco
---

# Gradual nitrate reduction over weeks Supports stable reef & FOWLR tanks Precision-formulated carbon dosing Red Sea NO3:PO4-X, Nitrate and Phosphate Reducer, 1 Liter

**Brand:** red sea
**Price:** 1152 DH
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate your reef game with precision nitrate control!

## Quick Answers

- **What is this?** Red Sea NO3:PO4-X, Nitrate and Phosphate Reducer, 1 Liter by red sea
- **How much does it cost?** 1152 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/2334538-red-sea-no3-po4-x-nitrate-and-phosphate-reducer-1)

## 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

- • **Gentle, gradual action:** Prevents bacterial blooms and coral shock with slow, steady dosing
- • **Proven long-term results:** Trusted by hobbyists to reduce nitrates and combat algae over months
- • **Science-backed dosing plan:** Engineered for predictable nitrate control without guesswork
- • **Compatible with phosphate removers:** Works seamlessly alongside GFO or PhosGuard for comprehensive water quality
- • **Ideal for sensitive reef ecosystems:** Maintains delicate coral health by avoiding rapid nutrient crashes

## Overview

Red Sea NO3:PO4-X is a scientifically formulated nitrate reducer designed for saltwater aquariums, including sensitive reef and FOWLR setups. By using a controlled carbon dosing method, it gradually lowers nitrate levels over several weeks, preventing harmful bacterial blooms and coral stress. Compatible with phosphate removers, it supports a balanced aquatic environment and has earned high user ratings for effectively managing nitrate-driven algae issues.

## 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: After the biopellet reactor kept clogging due to the poor water conditions (we did implement large weekly water changes ... - This product helped reduce an ongoing nitrate problem. After a long trip we came home to a tank over run by Green Hair Algae and nitrates and phosphates out of control. After the biopellet reactor kept clogging due to the poor water conditions (we did implement large weekly water changes as part of the recovery strategy) I decided to try this. Unlike other carbon dosing methods I researched this one has a formulated plan - they've done the dosing research and it is based on chemistry values. As someone relatively new to the hobby it was attractive due to a straight forward learning curve and low risk if used as directed. After using this for a week nitrates dropped from over 20ppm to 10. It has been about 6 months now and between this product and the restoration of good husbandry practices (regular water changes, good protein skimming and ensuring filter socks and rocks are cleared of debris routinely) the GHA problem has finally resolved. We did not use this as a single solution but it definitely worked as part of an ongoing plan. Will continue to use this product.

## Features

- Pet Products

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004FUEAEI |
| ASIN  | B004FUEAEI |
| Best Sellers Rank | #46,100 in Pet Supplies ( See Top 100 in Pet Supplies ) #446 in Aquarium Water Treatments |
| Brand Name | Red Sea |
| Customer Reviews | 4.5 4.5 out of 5 stars (835) |
| Date First Available | December 10, 2010 |
| Date First Available  | December 10, 2010 |
| Directions | Test water with Nitrate & Phosphate Pro test kits, add as needed, and monitor nitrate and phosphate levels. |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 3.54 x 9.84 x 3.54 inches |
| Item Package Dimensions L x W x H | 10.12 x 3.58 x 3.5 inches |
| Item Weight | 1 Pounds |
| Item model number | 306050 |
| Item model number  | 306050 |
| Manufacturer | Red Sea |
| Manufacturer  | Red Sea |
| Product Dimensions  | 3.54 x 9.84 x 3.54 inches; 1 Pounds |
| Target Audience Keyword | fish |

## Product Details

- **Brand:** Red Sea
- **Item Form:** Liquid
- **Item Weight:** 16 ounces
- **Liquid Volume:** 1000 Milliliters
- **Manufacturer:** Red Sea

## Images

![Red Sea NO3:PO4-X, Nitrate and Phosphate Reducer, 1 Liter - Image 1](https://m.media-amazon.com/images/I/71KOxwWeu-L.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.

### ⭐⭐⭐⭐⭐ After the biopellet reactor kept clogging due to the poor water conditions (we did implement large weekly water changes ...
*by A***M on November 12, 2014*

This product helped reduce an ongoing nitrate problem. After a long trip we came home to a tank over run by Green Hair Algae and nitrates and phosphates out of control. After the biopellet reactor kept clogging due to the poor water conditions (we did implement large weekly water changes as part of the recovery strategy) I decided to try this. Unlike other carbon dosing methods I researched this one has a formulated plan - they've done the dosing research and it is based on chemistry values. As someone relatively new to the hobby it was attractive due to a straight forward learning curve and low risk if used as directed. After using this for a week nitrates dropped from over 20ppm to 10. It has been about 6 months now and between this product and the restoration of good husbandry practices (regular water changes, good protein skimming and ensuring filter socks and rocks are cleared of debris routinely) the GHA problem has finally resolved. We did not use this as a single solution but it definitely worked as part of an ongoing plan. Will continue to use this product.

### ⭐⭐⭐⭐⭐ 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.

## 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

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*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-03-02*