---
product_id: 41584346
title: "Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g"
brand: "kolar labs"
price: "380 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Kolar Labs"
url: https://www.desertcart.dk/products/41584346-kolar-labs-gfo-bayoxide-e33-phosphate-remover-for-freshwater-saltwater
store_origin: DK
region: Denmark
---

# Long-lasting 6–8 weeks performance Effective in both freshwater & saltwater Ultra-pure virgin Bayoxide E33 granules Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g

**Brand:** kolar labs
**Price:** 380 kr
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate Your Aquarium Game with Kolar Labs’ Phosphate Powerhouse!

## Quick Answers

- **What is this?** Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g by kolar labs
- **How much does it cost?** 380 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/41584346-kolar-labs-gfo-bayoxide-e33-phosphate-remover-for-freshwater-saltwater)

## Best For

- kolar labs enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Integration:** Works seamlessly in reactors, filter socks, canister filters, and cartridges with minimal prep—just a quick rinse before use
- • **Premium German Engineering:** Manufactured by LANXESS to rigorous drinking water purity standards for unmatched quality and reliability
- • **Crystal Clear Waters, Every Time:** Reduces phosphates to ultra-low levels (0.03–0.05 ppm) for pristine aquarium clarity
- • **Versatile Aquarium Compatibility:** Safe and effective for freshwater, saltwater, reef tanks, and ponds—one solution for all your aquatic habitats
- • **Sustained Coral Health & Vibrancy:** Keeps phosphate levels stable to prevent algae growth and promote vibrant, healthy corals that stand out

## Overview

Kolar Labs GFO Bayoxide E33 is a premium 250g granular ferric oxide phosphate remover designed for both freshwater and saltwater aquariums. Manufactured in Germany by LANXESS to strict purity standards, it effectively reduces phosphate levels to 0.03–0.05 ppm, promoting clearer water and healthier coral. Compatible with various filtration systems, it offers long-lasting performance of 6–8 weeks, making it a trusted choice for serious aquarium enthusiasts aiming to maintain vibrant, algae-free aquatic environments.

## Description

desertcart.com : Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g : Pet Supplies

Review: Top Quality - I’ve tried several brands of GFO over the years, and Kolar Labs’ Bayoxide E33 is easily one of the most consistent. It’s clean right out of the jar — very little dust after a quick rinse — and it doesn’t clump or break down like some cheaper versions. I’m running it in a reactor on my 150-gallon reef tank, and it keeps my phosphate levels stable around 0.03–0.05 ppm. I noticed clearer water within a few days and no negative effect on corals. What I like most is how long it lasts before needing replacement — easily 6–8 weeks depending on bioload. Pro tip: rinse lightly with RO water before use, and use a slow tumble in your reactor to avoid grinding it down. If you’re serious about keeping algae under control and your colors crisp, this GFO is worth every penny.
Review: Good phosphate remover. - I tested my saltwater phosphate. It was 0.06.. a week before installing this product. Tested this week. Phosphate is 0.03. I like where it's going now.

## Features

- HIGH QUALITY: High-quality, ultra-pure virgin Bayoxide E33 granular ferric oxide (GFO) with reduced fines; Removes phosphates from water
- CLEANER AND HEALTHIER AQUARIUMS: Reduces phosphates to help keep aquariums clean and clear, and aquatic life healthy
- SAFE FOR ALL AQUARIUMS: Works in saltwater and freshwater aquariums, reef tanks, ponds and more
- USE INSTRUCTIONS: Works great in reactors, filters socks, canister filters, and filter cartridges. Give a quick rinse to remove any dust from shipping prior to use
- MANUFACTURED BY LANXESS in Germany to rigorous quality, performance, and drinking water purity standards for years

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Kolar Labs |
| Customer Reviews | 4.4 out of 5 stars 513 Reviews |
| Item Form | Granules |
| Item Weight | 8.8 ounces |
| Manufacturer | Kolar Labs |
| UPC | 851794007054 |

## Product Details

- **Brand:** Kolar Labs
- **Item Weight:** 0.55 Pounds
- **Item Form:** Granules
- **Manufacturer:** Kolar Labs
- **UPC:** 851794007054

## Images

![Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g - Image 1](https://m.media-amazon.com/images/I/61uf3HQ6MpL.jpg)
![Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g - Image 2](https://m.media-amazon.com/images/I/71Kn4kU5vQL.jpg)
![Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g - Image 3](https://m.media-amazon.com/images/I/91+pu-d60yL.jpg)
![Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g - Image 4](https://m.media-amazon.com/images/I/81lIUG3BhWL.jpg)
![Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g - Image 5](https://m.media-amazon.com/images/I/71t1irPqOhL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Where should I put this in a Fluval evo 13.5 gal tank? And is it good to mix with activated carbon in a same bag?**
A: Thank you for your question! The media works well inside a fine mesh bag, well rinsed, anywhere there is decent water flow (like where you would place a carbon bag).  This media can be mixed with the activated carbon in the same bag however, the GFO stays active longer than the carbon so that would be the only drawback. Please let us know if you have any other questions, we are happy to help.

**Q: It says it can be used in pools. Are there dosage recommendations on the package**
A: It says 1 - 2 grams per gallon in a fine mesh bag. I use it in my 35 gallon saltwater tank but I'm not sure how much it would take in a pool.? The jar has 454 grams in it.

**Q: Can this be used in a reactor?**
A: Hello, thank you for your question. This product can be mixed in reactor with carbon or used by itself. Please let us know if you have any further questions! The Kolar Labs Team

**Q: How do i use this?**
A: It's a really small particle GFO so you'll need to use a "very fine" mesh bag.  Use an 1/8 to 1/4 cup for 30-40 gals. Rinse it and place the bag pretty much anywhere in your sump's flow/return. It works wonders with phosphates! Replace it every 4 to 6 weeks. I've also mixed it with activated carbon, mix about 1 part GMO to 2-3 parts carbon.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Top Quality
*by S***H on October 6, 2025*

I’ve tried several brands of GFO over the years, and Kolar Labs’ Bayoxide E33 is easily one of the most consistent. It’s clean right out of the jar — very little dust after a quick rinse — and it doesn’t clump or break down like some cheaper versions. I’m running it in a reactor on my 150-gallon reef tank, and it keeps my phosphate levels stable around 0.03–0.05 ppm. I noticed clearer water within a few days and no negative effect on corals. What I like most is how long it lasts before needing replacement — easily 6–8 weeks depending on bioload. Pro tip: rinse lightly with RO water before use, and use a slow tumble in your reactor to avoid grinding it down. If you’re serious about keeping algae under control and your colors crisp, this GFO is worth every penny.

### ⭐⭐⭐⭐⭐ Good phosphate remover.
*by J***O on August 21, 2025*

I tested my saltwater phosphate. It was 0.06.. a week before installing this product. Tested this week. Phosphate is 0.03. I like where it's going now.

### ⭐⭐⭐⭐⭐ Got rid of the poop!
*by B***E on August 26, 2025*

Did what its supposed to do! Dropped them phosphates like it was hot!

## Frequently Bought Together

- Kolar Labs GFO Bayoxide E33 Phosphate Remover – for Freshwater and Saltwater Aquariums, Reef Tanks, Promotes Coral Health, 250g
- Kolar Labs Crystal Cal Activated Carbon – Large Jar, Activated Charcoal for Aquariums and Fish Tanks
- Aquatop Media Reactor, 95 GPH – Up-Flow Filtration for Water Treatment – 10-75 Gal – Adjustable Water Pump Included – Reliable Filtration System

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-28*