---
product_id: 165439460
title: "D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz"
brand: "d/d"
price: "HK$1164"
currency: HKD
in_stock: true
category: "D/D"
url: https://www.desertcart.hk/products/165439460-d-d-rp-50-rowaphos-phosphate-removal-media-500-ml
store_origin: HK
region: Hong Kong
---

# Superior phosphate removal efficiency 500 ml concentrated media Patented ferric hydroxide tech D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz

**Brand:** d/d
**Price:** HK$1164
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium’s water quality with the science-backed phosphate remover everyone’s talking about!

## Quick Answers

- **What is this?** D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz by d/d
- **How much does it cost?** HK$1164 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/165439460-d-d-rp-50-rowaphos-phosphate-removal-media-500-ml)

## Best For

- d/d enthusiasts

## Why This Product

- Trusted d/d brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Concentrated Volume:** 500 ml pack delivers powerful treatment in a space-saving form.
- • **Engineered for Maximum Purity:** Patented ferric hydroxide formula outperforms standard iron oxides and zeolites.
- • **Proven Lab-Tested Performance:** Top-ranked by Berlin Technical University for phosphate removal efficiency.
- • **Versatile Fresh & Saltwater Use:** Optimized for both freshwater and marine aquarium environments.
- • **High Capacity & Low Concentration Action:** Removes phosphates even at trace levels with superior holding capacity.

## Overview

D-D RP-50 ROWAphos is a patented ferric hydroxide media designed for highly efficient phosphate, arsenic, and silicate removal in fresh and saltwater aquariums. Independently tested and proven superior to competing iron oxide and aluminum-based products, it offers unmatched capacity and performance in a concentrated 500 ml liquid form trusted by aquarium professionals.

## Description

RowaPhos is a unique man made ferric hydroxide material specifically produced for efficient removal of phosphates, arsenic and silicates from fresh and salt water, having initially been developed in Germany for treating mains water supplies. As such it should not be confused with natural materials, which are generally based on aluminium oxide, (zeolite). RowaPhos is manufactured using a Patented process which makes it physically and chemically completely different to the vast array of other iron based media which have sprung up to ride on the sucess of the Rowa product. Most of these products are iron oxide based and have a higher capacity for phosphate than aluminium based medias but do not touch the engineered properties of RowaPhos. In an independent series of tests carried out by the Berlin Technical University on the five most commonly used phosphate removers at the time, RowaPhos was found to be the most efficient in removing phosphate from water. Other medias tested reached only to 30 – 40 % of its removal capacity by weight. Additionally RowaPhos was found to continue to remove phosphates at lower concentrations and had a higher maximum holding capacity.

## Features

- Concentrated

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002NPY6U0 |
| Brand Name | d/d |
| Customer Reviews | 4.6 4.6 out of 5 stars (5) |
| Global Trade Identification Number | 04032974404054 |
| Item Form | Liquid |
| Item Weight | 1 Pounds |
| Liquid Volume | 500 Millilitres |
| Manufacturer Part Number | RW500 |
| Model Number | RW500 |
| Number Of Items | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| Unit Count | 500.0 Grams |

## Product Details

- **Brand:** d/d
- **Item Form:** Liquid
- **Item Weight:** 1 Pounds
- **Liquid Volume:** 500 Millilitres
- **Net Quantity:** 500.0 Grams

## Images

![D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz - Image 1](https://m.media-amazon.com/images/I/516-QwAdBuL.jpg)
![D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz - Image 2](https://m.media-amazon.com/images/I/417sixl5oSL.jpg)
![D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz - Image 3](https://m.media-amazon.com/images/I/41ZAferbIOL.jpg)

## Questions & Answers

**Q: Is this ok for use in fresh water tanks?**
A: The instructions I have read say yes it is safe on both salt and fresh water tanks

**Q: Does the 1000ml size come with a filter bag for placing in the sump?**
A: Hi Michael, no the 1000 ml. size does not come with a filter bag. I would recommend to run it in a media reactor, it will be much more efficient that way.

**Q: Is RowaPhos less likley to clump than BRS standard GFO?**
A: Either one will clump if not used properly but Rowaphos is a great product!

**Q: Does this need to rinsed?  I saw some people rinse it and others don't..what are your suggestions?  i will use it within a reactor on 120 Reef.**
A: My understanding is that you should not rinse this product. I never have and have never had issues with it in my 120.

## Frequently Bought Together

- D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz
- Marineland Black Diamond Premium Activated Carbon, Filter Media For Aquariums, 40 Ounces
- ALEGI Media Filter Bag Aquarium Extra Fine,Reusable 180 Micron Drawstring Mesh Filter Bags for Very Fine Resins Filter (7.5"*3.6" (3 Pack))

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**Shop now:** [https://www.desertcart.hk/products/165439460-d-d-rp-50-rowaphos-phosphate-removal-media-500-ml](https://www.desertcart.hk/products/165439460-d-d-rp-50-rowaphos-phosphate-removal-media-500-ml)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-10-24*