---
product_id: 51645605
title: "Red Sea Reef Care NO3:PO4-X Nitrate and Phosphate Reducer - 16.9 oz. (500-ml) for Aquarium Coral Care, Algae Control, Optimal Coral Growth and Coloration - 1 lb"
brand: "red sea"
price: "4380 kr"
currency: ISK
in_stock: false
reviews_count: 1
url: https://www.desertcart.is/products/51645605-red-sea-reef-care-no3-po4-x-nitrate-and-phosphate
store_origin: IS
region: Iceland
---

# biological nitrate & phosphate reduction optimal coral growth & coloration 500 ml precision dosing Red Sea Reef Care NO3:PO4-X Nitrate and Phosphate Reducer - 16.9 oz. (500-ml) for Aquarium Coral Care, Algae Control, Optimal Coral Growth and Coloration - 1 lb

**Brand:** red sea
**Price:** 4380 kr
**Availability:** ❌ Out of Stock

## Summary

> 🌊 Elevate your reef game—because your corals deserve the spotlight!

## Quick Answers

- **What is this?** Red Sea Reef Care NO3:PO4-X Nitrate and Phosphate Reducer - 16.9 oz. (500-ml) for Aquarium Coral Care, Algae Control, Optimal Coral Growth and Coloration - 1 lb by red sea
- **How much does it cost?** 4380 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/51645605-red-sea-reef-care-no3-po4-x-nitrate-and-phosphate)

## 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

- • **Coral Color Booster:** Optimizes zooanthellae balance to unlock vibrant, natural coral hues.
- • **Safe & Targeted Formula:** Avoids chemical conflicts by not mixing with other phosphate removers.
- • **Biological Algae Defense:** Harnesses bacteria to naturally reduce nuisance algae and cyanobacteria.
- • **Essential Reef Care Step:** A must-have pre-treatment for using Red Sea’s reef colors supplement family.
- • **Precision-Controlled Nutrient Balance:** Accurately dose with pro test kits for perfect nitrate & phosphate levels.

## Overview

Red Sea Reef Care NO3:PO4-X is a 500 ml liquid biological treatment designed to reduce nitrate and phosphate levels in reef aquariums. By promoting bacterial processes, it controls nuisance algae and balances coral symbiotic algae (zooanthellae), enhancing coral growth and coloration. It requires precise dosing with test kits and is essential for optimal use of Red Sea’s reef colors supplements.

## Description

Product description Red Sea biological nitrate and phosphate remover prevents nuisance algae and enables control of zooanthealle for optimum coral growth and coloration. NO3:PO4-X promotes the biological reduction processes of nitrate and phosphate by bacteria to reduce nuisance algae and cyanobacteria and effectively balance the zooanthealle population of corals. NO3:PO4 -X is part of the reef care program and is an essential pre-requirement for using the reef colors supplement family that enables corals to display their natural colors. NO3:PO4-X must be accurately dosed by using nitrate and phosphate pro test kits and cannot be used with other phosphate removers. Available in 500-ml bottle. Directions 1. Test your aquarium water for nitrate and phosphate levels. 2. Accurately dose NO3:PO4-X based on the test results. 3. Do not use NO3:PO4-X with other phosphate removers. 4. Monitor nitrate and phosphate levels regularly to ensure proper reduction.

Review: Red Sea Reef No/Pox - Excellent product, shipped well packed and arrived as advertised.

## Features

- Flammable liquid and vapour.
- Biological nitrate and phosphate remover prevents nuisance algae and enables control of zooanthealle for optimum coral growth and coloration
- Promotes the biological reduction processes of nitrate and phosphate by bacteria to reduce nuisance algae
- It is part of the reef care program and is an essential pre-requirement for using the reef colors supplement family that enables corals
- NO3:PO4-X must be accurately dosed by using nitrate and phosphate pro test kits and cannot be used with other phosphate removers
- Available in 500-ml bottle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B006L48D3U |
| Best Sellers Rank | 113,608 in Pet Supplies ( See Top 100 in Pet Supplies ) 1,076 in Aquarium Water Treatments |
| Brand | Red Sea |
| Brand Name | Red Sea |
| Customer Reviews | 4.5 out of 5 stars 541 Reviews |
| Global Trade Identification Number | 00730773222032 |
| Item Form | Liquid |
| Item Weight | 454 g |
| Item form | Liquid |
| Item height | 8 centimetres |
| Item weight | 454 g |
| Liquid Volume | 500 Millilitres |
| Liquid volume | 500 Millilitres |
| Manufacturer | TopDawg Pet Supply |
| Target Species | Coral |
| UPC | 730773222032 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Red Sea
- **Item form:** Liquid
- **Item weight:** 1 Pounds
- **Liquid volume:** 500 Millilitres
- **Manufacturer:** TopDawg Pet Supply

## Images

![Red Sea Reef Care NO3:PO4-X Nitrate and Phosphate Reducer - 16.9 oz. (500-ml) for Aquarium Coral Care, Algae Control, Optimal Coral Growth and Coloration - 1 lb - Image 1](https://m.media-amazon.com/images/I/616rw6PL5yL.jpg)
![Red Sea Reef Care NO3:PO4-X Nitrate and Phosphate Reducer - 16.9 oz. (500-ml) for Aquarium Coral Care, Algae Control, Optimal Coral Growth and Coloration - 1 lb - Image 2](https://m.media-amazon.com/images/I/71N3PqCA8mL.jpg)
![Red Sea Reef Care NO3:PO4-X Nitrate and Phosphate Reducer - 16.9 oz. (500-ml) for Aquarium Coral Care, Algae Control, Optimal Coral Growth and Coloration - 1 lb - Image 3](https://m.media-amazon.com/images/I/81SY16fGxyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Red Sea Reef No/Pox
*by G***. on 6 March 2025*

Excellent product, shipped well packed and arrived as advertised.

## Frequently Bought Together

- Red Sea NO3:PO4-X 500ml NOPOX - Nitrate & Phosphate Reducer for Reef Aquariums, Promotes Healthy Coral Growth, Controls Algae & Maintains Water
- Red Sea Reef Energy Plus 500ml (AB+) All in One Coral Food for Saltwater Aquarium Marine Reef Tanks | Food for Soft, LPS, SPS, and Non-Photosynthetic Corals
- Tropic Marin All-for-Reef Liquid 500 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.is/products/51645605-red-sea-reef-care-no3-po4-x-nitrate-and-phosphate](https://www.desertcart.is/products/51645605-red-sea-reef-care-no3-po4-x-nitrate-and-phosphate)

---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-01-23*